Brown, Matt, Jonathan Wai, and Christopher Chabris. 2020. “Can You Ever Be Too Smart for Your Own Good? Linear and Nonlinear Effects of Cognitive Ability.” PsyArXiv. January 30. https://psyarxiv.com/rpgea/
Abstract: Despite a longstanding expert consensus about the importance of cognitive ability for life outcomes, contrary views continue to proliferate in scholarly and popular literature. This divergence of beliefs among researchers, practitioners, and the general public presents an obstacle for evidence-based policy and decision-making in a variety of settings. One commonly held idea is that greater cognitive ability does not matter or is actually harmful beyond a certain point (sometimes stated as either 100 or 120 IQ points). We empirically test these notions using data from four longitudinal, representative cohort studies comprising a total of 48,558 participants in the U.S. and U.K. from 1957 to the present. We find that cognitive ability measured in youth has a positive association with most occupational, educational, health, and social outcomes later in life. Most effects were characterized by a moderate-to-strong linear trend or a practically null effect (mean R2 = .002 to .256). Although we detected several nonlinear effects, they were small in magnitude (mean incremental R2= .001). We found no support for any detrimental effects of cognitive ability and no evidence for a threshold beyond which greater scores cease to be beneficial. Thus, greater cognitive ability is generally advantageous—and virtually never detrimental.
Thursday, January 30, 2020
The vast majority of dogs and cats were reported to remember past events; both species reportedly remembered single-occurrence events that happened years ago
Pet memoirs: The characteristics of event memories in cats and dogs, as reported by their owners. Amy Lewis, Dorthe Berntsen. Applied Animal Behaviour Science, Volume 222, January 2020, 104885. https://doi.org/10.1016/j.applanim.2019.104885
Highlights
• The vast majority of dogs and cats were reported to remember past events.
• Both species reportedly remembered single-occurrence events that happened years ago.
• The events were diverse and often involved an interaction with an animal or person.
• They were often recalled when current external stimuli overlapped with the memory.
Abstract: The case for episodic memory in non-human animals has been intensely debated. Although a variety of paradigms have shown elements of episodic memory in non-human animals, research has focused on rodents, birds and primates, using standardized experimental designs, limiting the types of events that can be investigated. Using a novel survey methodology to address memories in everyday life, we conducted two studies asking a total of 375 dog and cat owners if their pet had ever remembered an event, and if so, to report on their pet’s memory of the event. In both studies, cats and dogs were reported to remember a variety of events, with only 20% of owners reporting that their pet had never remembered an event. The reported events were often temporally specific and were remembered when commonalities (particularly location) occurred between the current environment and the remembered event, analogous to retrieval of involuntary memories in humans.
Keywords: Event memoryEpisodic-like memoryDog cognitionCat cognitionInvoluntary autobiographical memory
Highlights
• The vast majority of dogs and cats were reported to remember past events.
• Both species reportedly remembered single-occurrence events that happened years ago.
• The events were diverse and often involved an interaction with an animal or person.
• They were often recalled when current external stimuli overlapped with the memory.
Abstract: The case for episodic memory in non-human animals has been intensely debated. Although a variety of paradigms have shown elements of episodic memory in non-human animals, research has focused on rodents, birds and primates, using standardized experimental designs, limiting the types of events that can be investigated. Using a novel survey methodology to address memories in everyday life, we conducted two studies asking a total of 375 dog and cat owners if their pet had ever remembered an event, and if so, to report on their pet’s memory of the event. In both studies, cats and dogs were reported to remember a variety of events, with only 20% of owners reporting that their pet had never remembered an event. The reported events were often temporally specific and were remembered when commonalities (particularly location) occurred between the current environment and the remembered event, analogous to retrieval of involuntary memories in humans.
Keywords: Event memoryEpisodic-like memoryDog cognitionCat cognitionInvoluntary autobiographical memory
Domestic dogs respond correctly to verbal cues issued by an artificial agent; generalisation of previously learned behaviours to the novel agent in all conditions was rapidly achieved
Domestic dogs respond correctly to verbal cues issued by an artificial agent. Nicky Shaw, Lisa M. Riley. Applied Animal Behaviour Science, January 30 2020, 104940. https://doi.org/10.1016/j.applanim.2020.104940
Highlights
• Domestic dogs can recall to an artificial agent and respond correctly to its pre-recorded, owner spoken verbal cues as reliably as to their owners in person and while alone in the test room.
• Generalisation of previously learned behaviours to the novel agent in all conditions was rapidly achieved.
• No behavioural indicators of poor welfare were recorded during interaction with the agent directly.
Abstract: Human-canine communication technology for the home-alone domestic dog is in its infancy. Many criteria need to be fulfilled in order for successful communication to be achieved remotely via artificial agents. Notably, the dogs’ capacity for correct behavioural responses to unimodal verbal cues is of primary consideration. Previous studies of verbal cues given to dogs alone in the test room have revealed a deterioration in correct behavioural responses in the absence of a source of attentional focus and reward. The present study demonstrates the ability of domestic pet dogs to respond correctly to an artificial agent. Positioned at average human eye level to replicate typical human-dog interaction, the agent issues a recall sound followed by two pre-recorded, owner spoken verbal cues known to each dog, and dispenses food rewards for correct behavioural responses. The agent was used to elicit behavioural responses in three test conditions; owner and experimenter present; experimenter present; and dog alone in the test room. During the fourth (baseline) condition, the same cues were given in person by the owner of each dog. The experiments comprised a familiarisation phase followed by a test phase of the four conditions, using a counterbalanced design. Data recorded included latency to correct response, number of errors before correct response given and behavioural welfare indicators during agent interaction. In all four conditions, at least 16/20 dogs performed the correct recall, cue 1 response, and cue 2 response sequence; there were no significant differences in the number of dogs who responded correctly to the sequence between the four conditions (p = 0.972). The order of test conditions had no effect on the dogs’ performances (p = 0.675). Significantly shorter response times were observed when cues were given in person than from the agent (p = 0.001). Behavioural indicators of poor welfare recorded were in response to owners leaving the test room, rather than as a direct result of agent interaction. Dogs left alone in the test room approached and responded correctly to verbal cues issued from an artificial agent, where rapid generalisation of learned behaviours and adjustment to the condition was achieved.
Keywords: DogDog-human communicationDog trainingUnimodal verbal cuesArtificial AgentWelfare
Highlights
• Domestic dogs can recall to an artificial agent and respond correctly to its pre-recorded, owner spoken verbal cues as reliably as to their owners in person and while alone in the test room.
• Generalisation of previously learned behaviours to the novel agent in all conditions was rapidly achieved.
• No behavioural indicators of poor welfare were recorded during interaction with the agent directly.
Abstract: Human-canine communication technology for the home-alone domestic dog is in its infancy. Many criteria need to be fulfilled in order for successful communication to be achieved remotely via artificial agents. Notably, the dogs’ capacity for correct behavioural responses to unimodal verbal cues is of primary consideration. Previous studies of verbal cues given to dogs alone in the test room have revealed a deterioration in correct behavioural responses in the absence of a source of attentional focus and reward. The present study demonstrates the ability of domestic pet dogs to respond correctly to an artificial agent. Positioned at average human eye level to replicate typical human-dog interaction, the agent issues a recall sound followed by two pre-recorded, owner spoken verbal cues known to each dog, and dispenses food rewards for correct behavioural responses. The agent was used to elicit behavioural responses in three test conditions; owner and experimenter present; experimenter present; and dog alone in the test room. During the fourth (baseline) condition, the same cues were given in person by the owner of each dog. The experiments comprised a familiarisation phase followed by a test phase of the four conditions, using a counterbalanced design. Data recorded included latency to correct response, number of errors before correct response given and behavioural welfare indicators during agent interaction. In all four conditions, at least 16/20 dogs performed the correct recall, cue 1 response, and cue 2 response sequence; there were no significant differences in the number of dogs who responded correctly to the sequence between the four conditions (p = 0.972). The order of test conditions had no effect on the dogs’ performances (p = 0.675). Significantly shorter response times were observed when cues were given in person than from the agent (p = 0.001). Behavioural indicators of poor welfare recorded were in response to owners leaving the test room, rather than as a direct result of agent interaction. Dogs left alone in the test room approached and responded correctly to verbal cues issued from an artificial agent, where rapid generalisation of learned behaviours and adjustment to the condition was achieved.
Keywords: DogDog-human communicationDog trainingUnimodal verbal cuesArtificial AgentWelfare
That confidence people have in their memory is weakly related to its accuracy, that false memories of fictitious childhood events can be easily implanted, are claims that rest on shaky foundations: Memory is malleable but essentially reliable
Regaining Consensus on the Reliability of Memory. Chris R. Brewin, Bernice Andrews, Laura Mickes. Current Directions in Psychological Science, January 30, 2020. https://doi.org/10.1177/0963721419898122
Abstract: In the last 20 years, the consensus about memory being essentially reliable has been neglected in favor of an emphasis on the malleability and unreliability of memory and on the public’s supposed unawareness of this. Three claims in particular have underpinned this popular perspective: that the confidence people have in their memory is weakly related to its accuracy, that false memories of fictitious childhood events can be easily implanted, and that the public wrongly sees memory as being like a video camera. New research has clarified that all three claims rest on shaky foundations, suggesting there is no reason to abandon the old consensus about memory being malleable but essentially reliable.
Keywords: false memory, memory accuracy, confidence, lay beliefs
Abstract: In the last 20 years, the consensus about memory being essentially reliable has been neglected in favor of an emphasis on the malleability and unreliability of memory and on the public’s supposed unawareness of this. Three claims in particular have underpinned this popular perspective: that the confidence people have in their memory is weakly related to its accuracy, that false memories of fictitious childhood events can be easily implanted, and that the public wrongly sees memory as being like a video camera. New research has clarified that all three claims rest on shaky foundations, suggesting there is no reason to abandon the old consensus about memory being malleable but essentially reliable.
Keywords: false memory, memory accuracy, confidence, lay beliefs
Academic dishonesty—to cheat, fabricate, falsify, and plagiarize in an academic context—is positively correlated with the dark traits, and negatively correlated with openness, conscientiousness, agreeableness, & honesty-humility
Plessen, Constantin Y., Marton L. Gyimesi, Bettina M. J. Kern, Tanja M. Fritz, Marcela Victoria Catalán Lorca, Martin Voracek, and Ulrich S. Tran. 2020. “Associations Between Academic Dishonesty and Personality: A Pre-registered Multilevel Meta-analysis.” PsyArXiv. January 30. doi:10.31234/osf.io/pav2f
Abstract: Academic dishonesty—the inclination to cheat, fabricate, falsify, and plagiarize in an academic context—is a highly prevalent problem with dire consequences for society. The present meta-analysis systematically examined associations between academic dishonesty and personality traits of the Big Five, the HEXACO model, Machiavellianism, narcissism, subclinical psychopathy, and the Dark Core. We provide an update and extension of the only meta-analysis on this topic by Giluk and Postlethwaite (2015), synthesizing in total 89 effect sizes from 50 studies—containing 38,189 participants from 23 countries. Multilevel meta-analytical modelling showed that academic dishonesty was positively correlated with the dark traits, and negatively correlated with openness, conscientiousness, agreeableness, and honesty-humility. The moderate-to-high effect size heterogeneity—ranging from I2 = 57% to 91%—could only be partially explained by moderator analyses. The observed relationships appear robust with respect to publication bias and measurement error, and can be generalized to a surprisingly large scope (across sexes, continents, scales, and study quality). Future research needs to examine these associations with validated and more nuanced scales for academic dishonesty.
Abstract: Academic dishonesty—the inclination to cheat, fabricate, falsify, and plagiarize in an academic context—is a highly prevalent problem with dire consequences for society. The present meta-analysis systematically examined associations between academic dishonesty and personality traits of the Big Five, the HEXACO model, Machiavellianism, narcissism, subclinical psychopathy, and the Dark Core. We provide an update and extension of the only meta-analysis on this topic by Giluk and Postlethwaite (2015), synthesizing in total 89 effect sizes from 50 studies—containing 38,189 participants from 23 countries. Multilevel meta-analytical modelling showed that academic dishonesty was positively correlated with the dark traits, and negatively correlated with openness, conscientiousness, agreeableness, and honesty-humility. The moderate-to-high effect size heterogeneity—ranging from I2 = 57% to 91%—could only be partially explained by moderator analyses. The observed relationships appear robust with respect to publication bias and measurement error, and can be generalized to a surprisingly large scope (across sexes, continents, scales, and study quality). Future research needs to examine these associations with validated and more nuanced scales for academic dishonesty.
High emotion recognition ability may inadvertently harm romantic and professional relationships when one perceives potentially disruptive information; also, high-ERA individuals do not appear to be happier with their lives
Inter- and Intrapersonal Downsides of Accurately Perceiving Others’ Emotions. Katja Schlegel. In: Social Intelligence and Nonverbal Communication pp 359-395, Jan 26 2020. https://link.springer.com/chapter/10.1007/978-3-030-34964-6_13
Abstract: The ability to accurately perceive others’ emotions from nonverbal cues (emotion recognition ability [ERA]) is typically conceptualized as an adaptive skill. Accordingly, many studies have found positive correlations between ERA and measures of social and professional success. This chapter, in contrast, examines whether high ERA can also have downsides, both for other people and for oneself. A literature review revealed little evidence that high-ERA individuals use their skill to hurt others. However, high ERA may inadvertently harm romantic and professional relationships when one perceives potentially disruptive information. Furthermore, high-ERA individuals do not appear to be happier with their lives than low-ERA individuals. Overall, the advantages of high ERA outweigh the downsides, but many open questions regarding negative effects remain to be studied.
Keywords: Emotion recognition Emotional intelligence Well-being Dark side Interpersonal accuracy
Summary and Conclusion
The ability to accurately recognize others’ emotions from the face, voice,
and body is typically considered to be an adaptive skill contributing to
social and professional success. This has been supported by various studies
(see Schmid Mast & Hall, 2018; Hall et al., 2009; Elfenbein et al.,
2007, for reviews). Much less research has looked into the potential
downsides or disadvantages of high ERA for oneself (i.e., for one’s wellbeing)
and for others (i.e., by manipulating other people or hampering
smooth interactions with others). The present chapter reviewed this
research in non-clinical adults, specifically focusing on the following
questions: Is there a “dark” side to high ERA in that people use it to hurt
others? Can high ERA negatively affect the quality of relationships? Why
is high ERA uncorrelated with psychological well-being? Finally, is there
an optimal level of ERA?
Although more research is clearly needed to answer these questions
with more confidence, the current state of the literature suggests that
ERA is a double-edged sword that affects one’s well-being and social outcomes
both positively and negatively. One common theme that emerged
as a possible explanation for both positive and negative pathways is the
heightened emotional awareness of or attunement to others’ feelings in
persons with high ERA. Because high-ERA individuals are more perceptive
of others’ positive and negative emotions, their own emotions also
appear be more affected by what is happening around them, contributing
to various inter- and intrapersonal outcomes.
For instance, high-ERA individuals seem to be more prosocial and
cooperative, maybe in order to perceive more positive emotions in others
and to preserve their own psychological well-being. Heightened emotional
awareness for others’ feelings can also explain the positive associations
between ERA and social and workplace effectiveness found in many
studies. On the other hand, “hyperawareness” in high-ERA individuals
can inadvertently contribute to lower rapport, less favorable impressions
in others, and lower relationship quality due to “eavesdropping” and the
failure to show “motivated inaccuracy” when it might be adaptive.
Because high emotional awareness appears to amplify the effects of
perceived positive and negative emotions, in stable environments with
only few stressors, the adaptive advantages of high ERA may outweigh
the downsides. However, as adversity or instability increases, the higher
proportion of perceived and experienced negative affect may contribute
to lower well-being and the development of depressive symptoms. A
higher tendency to suffer with others in distress might represent one possible
mechanism negatively influencing psychological well-being.
Taken together, the various positive and negative pathways between
high ERA and well-being as well as interpersonal relationships may
explain why ERA does not appear to be positively correlated with wellbeing,
although this had been found for emotional intelligence more
broadly (e.g., Sánchez-Álvarez et al., 2015). One may speculate that other
components of emotional intelligence such as the ability to regulate one’s
own negative emotions efficiently or the ability to manage others’ emotions
have fewer potential downsides than ERA with respect to one’s own
well-being, although they may be more “useful” when it comes to manipulating
others (e.g., Côté et al., 2011).
An interesting question is whether the terms “emotional hyperawareness”
(e.g., Davis & Nichols, 2016) or “hypersensitivity” (Fiori & Ortony,
2016) are appropriate to describe high-ERA individuals. These terms are
often used to describe an exaggerated, maladaptive reactivity of neurophysiological
structures related to mental disorders (e.g., Frick et al.,
2012; Neuner et al., 2010). In healthy individuals with high ERA, however,
the elevated attunement to emotions might represent a more realistic
and holistic view of the social world rather than a bias (Scherer, 2007). If
this is the case, then the absence of a correlation between ERA and wellbeing
or life satisfaction may also reflect that those high in ERA evaluate
these constructs more realistically and thus more negatively, although
they might be “happier” than others if different criteria were used. It may
also be that high-ERA individuals, compared to low-ERA individuals, are
relatively more satisfied with some life domains (e.g., friendships) and
less satisfied with others (e.g., work), which may cancel each other out
when global well-being or life satisfaction is considered.
The current literature can be expanded in several ways. In particular,
more studies that examine the moderating effects of personality traits on
the link between ERA and outcomes are needed. In particular, traits
related to the processing and regulation of emotions in oneself and others
might moderate the effects of ERA not only on intrapersonal outcomes
such as psychological well-being but also on interpersonal outcomes such
as relationship quality. For example, it would be interesting to examine
how ERA, empathic concern, and detachment interact in predicting
stress, emotional exhaustion, or work engagement in helping professions.
One can hypothesize that a high ability to detach oneself from stressful
negative work experiences protects professionals that are highly perceptive
of clients’ negative feelings and express empathic concern from negative
effects on well-being. Other possible moderating variables include
“positivity offset” (Ito & Cacioppo, 2005) and stable appraisal biases
(Scherer, 2019). In addition, “dark” personality traits might moderate the
effects on interpersonal behaviors such as deception, such that high ERA
may, for example, amplify the effects of high Machiavellianism or trait
exploitativeness (Konrath et al., 2014). Future studies should also look
into curvilinear relationships to examine which levels of ERA are the
most beneficial or detrimental for various outcomes and situations.
Furthermore, longitudinal studies may shed light on the causality
underlying ERA and the development of psychological well-being over
time as a function of a person’s environment. For example, it could be
tested whether Wilson and Csikszentmihalyi’s (2007) finding that prosociality
is beneficial in stable environments but detrimental in adverse
ones also holds for ERA. Such studies would also allow investigating the
causal pathways linking ERA and depressive symptoms, including testing
the possibilities that dysphoria increases ERA (Harkness et al., 2005) and
that ERA, due to a more realistic perception of the social world, makes
people “wiser but sadder” (Scherer, 2007).
Many of the above conclusions rely on the assumption that high ERA
relates to a higher attunement to emotions in our surroundings. However,
only few studies to date examined this association. Fiori and Ortony
(2016) and Freudenthaler and Neubauer (2007) pointed out that ability
tests of emotional intelligence measure maximal performance and crystallized
knowledge, but do not necessarily capture typical performance
and more fluid emotion processing. More research is thus needed to corroborate
the idea that being good at accurately labeling emotional expressions
when one is explicitly instructed to do so is related to paying more
attention to emotions in everyday life when an abundance of different
types of information is available. Future research should involve the
development of new standard tests tapping into typical performance
regarding emotion perception. Future studies could also benefit from
using methods such as portable eye tracking or experience sampling to be
able to study more real-life situations. Finally, future studies may examine
satisfaction in specific life domains as outcome measures of ERA in addition
to general measures of well-being.
The current review also raises the question whether available trainings
for increasing ERA (see Blanch-Hartigan, Andrzejewski, & Hill, 2012
for a meta-analysis) are useful if high ERA can have detrimental effects.
The answer may depend on what outcomes are considered. If an ERA
training improves law enforcement officers’ job performance (Hurley,
Anker, Frank, Matsumoto, & Hwang, 2014) or helps doctors to better
understand their patients (Blanch-Hartigan, 2012), the answer would be
that trainings are useful. When psychological well-being is considered as
the outcome, stand-alone ERA trainings may not always be useful, for
example, if a person is experiencing chronic stress or depressive symptoms.
In these cases, it may be beneficial to combine an ERA training
with a training targeted at the use of adaptive emotion regulation strategies
to prevent potentially detrimental effects.
To conclude, I would like to emphasize that, overall, ERA should still
be considered an adaptive and valuable skill, especially when effective
interpersonal interactions in the workplace or close relationships are
considered
(e.g., reviews by Elfenbein et al., 2007; Schmid Mast & Hall,
2018). High-ERA individuals receive better ratings from others on various
positive traits (e.g., socio-emotional competence) and report being
more open, more conscientious, and more tolerant (Hall et al., 2009).
The interpersonal downsides and “dark” aspects of high ERA in healthy
adults discussed in the present chapter seem to be limited to relatively
specific situations or ERA profiles, although more research is needed.
With respect to psychological well-being, however, the picture seems to
be more nuanced, implying both positive and negative pathways that
may be more or less influential based on a person’s life situation and personality
traits. More sophisticated study designs, novel data collection
methods, and more complex statistical analyses can help us better understand
these mechanisms.
Being so important to identify deception, we are really bad at it, so we developed the equivalent of an intelligence network that would pass along information and evidence, thus rendering the need for an individual lie detector moot
Nonverbal Communication: Evolution and Today. Mark G. Frank, Anne Solbu. In: Social Intelligence and Nonverbal Communication pp 119-162, January 26 2020. https://link.springer.com/chapter/10.1007/978-3-030-34964-6_5
Abstract: One aspect of social intelligence is the ability to identify when others are being deceptive. It would seem that individuals who were bestowed with such an ability to recognize honest signals of emotion, particularly when attempts to suppress them are made, would have a reproductive advantage over others without it. Yet the research literature suggests that on average people are good at detecting only overt manifestations of these signals. We argue instead that our evolution as a social species living in groups permitted discovery of deceptive incidents due to the factual evidence of the deception transmitted verbally through social connections. Thus the same principles that pressed for our evolution as a cooperative social species enabled us to develop the equivalent of an intelligence network that would pass along information and evidence, thus rendering a press for an individual lie detector moot.
Keywords: Deception detection Evolution Emotions Behavioral signals Social life
Conclusion
Taken together, it is clear that there are strong signals for various emotions and intentions and a strong rationale for why these signals would be
‘engineered’ to solve a recurrent problem. And despite being wired to
detect these signals, humans are poor detectors of these signals once they
become subtle through efforts to conceal them. Yet this ability to spot
these dishonest and/or subtle versions of the signals would seem to be of
great benefit to any given individual in his or her quest to survive and
pass on his or her genes to the next generation. This sense that evolution
did not bestow our species with these internal event detectors seems puzzling, until we unpack some of the social structures of the ancient world.
It seems the cooperative structures, and little (at least initially) opportunities to ‘cheat’, often may have allowed, in essence, an intelligence network to be developed where pejorative information could be passed along
easily and cheaply to identify any particular cheater. Thus, the evolution
of cooperative behavior was the key to lie-catching. It seems logical that
there would be no strong independent press to develop internal cheater
detectors, when a strong social network would do the job for at a greatly
reduced cost (Smith, 2010).
Importantly, lie detection in the laboratory or in single case studies
does not fully translate to the real world, where gossip and relationships
with others matter (Haidt, 2001). People rely on gossip, even when accuracy may be limited (Sommerfeld, Krambeck, & Milinski, 2008); it may
nevertheless actually improve lie detection (Klein & Epley, 2015).
Moreover, it is through the influence from others that we may decide to
override our tendency to cooperate (Bear & Rand, 2016) and employ
conscious deliberation to make our decisions (Haidt, 2001). The alignment of emotions through empathy, and increased goal sharing (Tomasello,
Carpenter, Call, Behne, & Moll, 2005), as evidenced by the #MeToo
movement (Rodino-Colocino, 2018), gave rise to the same powerful
group thinking and sociality as seen in the emergence of human morality
(Jensen, Vaish, & Schmidt, 2014). Haidt (2001) states “A group of judges
independently seeking truth is unlikely to reach an effective consensus,
but a group of people linked together in a large web of mutual influence
may eventually settle into a stable configuration” (p. 826). This becomes,
functionally, a long-range radar type system that has agents reporting
back actions, behaviors, and relationships to each other, which in turn sets
the groundwork for recognizing inconsistencies regarding people not
being where they say they are, people being with people they deny knowing, and so forth. The presence of this communication network would
reduce the need to make individuals hyper-vigilant in every interaction,
or to individually develop super-acute deception detection skills. Likewise,
unusual interpersonal behaviors can trigger individuals to search for evidence to verify their hypotheses about someone’s veracity, and they can
then activate their social networks to verify the information provided by
the unusually behaving person (Novotny et al., 2018). These networks are
not just passive providers of information. Thus, the socially intelligent
person is the one who has the best access to the collective intelligence—
and likely the most friends, as believed by the Ugandans (Wober, 1974).
We believe the research literature has neglected this larger system in which
our social structures exist, which often detect the deception for us. Even
as our society expands, social media and movements like #MeToo have
become like the global village, where previously unacquainted individuals
can now verify the truth or falsity of each other, thus (hopefully) betraying
the attempted liar.
Abstract: One aspect of social intelligence is the ability to identify when others are being deceptive. It would seem that individuals who were bestowed with such an ability to recognize honest signals of emotion, particularly when attempts to suppress them are made, would have a reproductive advantage over others without it. Yet the research literature suggests that on average people are good at detecting only overt manifestations of these signals. We argue instead that our evolution as a social species living in groups permitted discovery of deceptive incidents due to the factual evidence of the deception transmitted verbally through social connections. Thus the same principles that pressed for our evolution as a cooperative social species enabled us to develop the equivalent of an intelligence network that would pass along information and evidence, thus rendering a press for an individual lie detector moot.
Keywords: Deception detection Evolution Emotions Behavioral signals Social life
Conclusion
Taken together, it is clear that there are strong signals for various emotions and intentions and a strong rationale for why these signals would be
‘engineered’ to solve a recurrent problem. And despite being wired to
detect these signals, humans are poor detectors of these signals once they
become subtle through efforts to conceal them. Yet this ability to spot
these dishonest and/or subtle versions of the signals would seem to be of
great benefit to any given individual in his or her quest to survive and
pass on his or her genes to the next generation. This sense that evolution
did not bestow our species with these internal event detectors seems puzzling, until we unpack some of the social structures of the ancient world.
It seems the cooperative structures, and little (at least initially) opportunities to ‘cheat’, often may have allowed, in essence, an intelligence network to be developed where pejorative information could be passed along
easily and cheaply to identify any particular cheater. Thus, the evolution
of cooperative behavior was the key to lie-catching. It seems logical that
there would be no strong independent press to develop internal cheater
detectors, when a strong social network would do the job for at a greatly
reduced cost (Smith, 2010).
Importantly, lie detection in the laboratory or in single case studies
does not fully translate to the real world, where gossip and relationships
with others matter (Haidt, 2001). People rely on gossip, even when accuracy may be limited (Sommerfeld, Krambeck, & Milinski, 2008); it may
nevertheless actually improve lie detection (Klein & Epley, 2015).
Moreover, it is through the influence from others that we may decide to
override our tendency to cooperate (Bear & Rand, 2016) and employ
conscious deliberation to make our decisions (Haidt, 2001). The alignment of emotions through empathy, and increased goal sharing (Tomasello,
Carpenter, Call, Behne, & Moll, 2005), as evidenced by the #MeToo
movement (Rodino-Colocino, 2018), gave rise to the same powerful
group thinking and sociality as seen in the emergence of human morality
(Jensen, Vaish, & Schmidt, 2014). Haidt (2001) states “A group of judges
independently seeking truth is unlikely to reach an effective consensus,
but a group of people linked together in a large web of mutual influence
may eventually settle into a stable configuration” (p. 826). This becomes,
functionally, a long-range radar type system that has agents reporting
back actions, behaviors, and relationships to each other, which in turn sets
the groundwork for recognizing inconsistencies regarding people not
being where they say they are, people being with people they deny knowing, and so forth. The presence of this communication network would
reduce the need to make individuals hyper-vigilant in every interaction,
or to individually develop super-acute deception detection skills. Likewise,
unusual interpersonal behaviors can trigger individuals to search for evidence to verify their hypotheses about someone’s veracity, and they can
then activate their social networks to verify the information provided by
the unusually behaving person (Novotny et al., 2018). These networks are
not just passive providers of information. Thus, the socially intelligent
person is the one who has the best access to the collective intelligence—
and likely the most friends, as believed by the Ugandans (Wober, 1974).
We believe the research literature has neglected this larger system in which
our social structures exist, which often detect the deception for us. Even
as our society expands, social media and movements like #MeToo have
become like the global village, where previously unacquainted individuals
can now verify the truth or falsity of each other, thus (hopefully) betraying
the attempted liar.
Wednesday, January 29, 2020
Does Attractiveness Lead to or Follow From Occupational Success? Findings From German Associational Football
Does Attractiveness Lead to or Follow From Occupational Success? Findings From German Associational Football. Henk Erik Meier, Michael Mutz. SAGE Open, January 29, 2020. https://doi.org/10.1177/2158244020903413
Abstract: Prior research has provided evidence that attractiveness is associated with work-related advantages. It is less clear, however, whether attractiveness is an antecedent or a consequence of professional success. To answer this question, associational football in Germany is used as an exemplifying case. Portrait pictures of German football players were retrieved, one picture from a very early career stage and one from a very late one. Attractiveness of these portraits was assessed by the “truth of consensus” method. Panel regression models are applied to analyze changes in attractiveness and relate these changes to professional success. Findings show that success as a footballer cannot be predicted with attractiveness at early career stages. Instead, the increase of attractiveness over time is more pronounced among very successful players. It is thus concluded that successful individuals are not more attractive in the very beginning, but improve their appearance throughout their careers.
Keywords: attractiveness, beauty, appearance, professional success, football
The
role of physical attractiveness for job-related interactions and
outcomes is intensely debated. Previous research has pointed to the
existence of a beauty premium in the labor market, but scholars have
recently emphasized that the causal mechanisms behind this beauty effect
are not completely understood. The objective of this study was to
provide some clues on the direction of the dependency, whether
attractiveness leads to or follows from success. The first notion that
attractiveness fosters professional success in associational football
was clearly rejected (H1). At the same time, it was shown that more
successful football players markedly improve their physical appearance
over time, lending support to the second idea that attractiveness
follows from success (H2). Hence, it can be concluded from the findings
that attractiveness is less an antecedent, but more a consequence of
success. Hence, beauty is not a stable characteristic of a football
player, but something modified by “beauty work.”
Large cross-sectional studies on football in Germany had shown that attractiveness and success are correlated (Rosar et al., 2010, 2013, 2017). In the interpretation of this association, it was claimed that coaches may give attractive footballers an advantage in fielding decisions which may help attractive players to become successful. In particular, the interpretation that coaches favor more attractive players was put forward by Rosar and colleagues (2017). However, bearing in mind that football is one of the few professional domains where attractiveness has particularly no relevance as a productivity factor, this interpretation comes as a surprise. Our results lend more support to the notion that players who are fielded more often (and are thus more often in the public spotlight) invest more into their beauty. Although this needs to be tested in future research more explicitly (including measures for grooming), the findings presented here suggest that the beauty premium in sport is probably more accurately interpreted as a by-product of beauty work and not as a form of discrimination against less attractive players.
If this line of reasoning is correct, it is still unclear what motivates this beauty work: On one hand, professional athletes are offered huge financial rewards for attractiveness and popularity, because these qualities are valued by media and the sport industry. For an athlete, beauty work can thus be a form of strategic investment to reach a broader public beyond the narrow scope of regular football fans and, in doing so, increase his endorser qualities. David Beckham or Cristiano Ronaldo may be considered textbook examples of this strategy (Coad, 2005). In forms of sponsorship and marketing deals, beauty work may thus pay-off for athletes and lead to higher revenues. However, Hamermesh et al. (2002) have also contested the idea that additional earnings due to investments in physical appearance recover costs (e.g., for clothing and cosmetics). However, this study was not conducted in the realm of professional sport and may thus not hold true in this particular context. On the other hand, beauty work must not necessarily represent an investment strategy, but may simply be a form of “conspicuous consumption” (Veblen, 1899/2007). Conspicuous consumption refers to the acquisition of luxury goods, including expensive clothing, to publicly demonstrate wealth and a high social status. Hence, in this line of interpretation, the “returns” of beauty work do not tend to a monetary but to a symbolic level, aiming at distinction and prestige. Moreover, it was also claimed that showy spending increases sex appeal among men (Sundie et al., 2011). Hence, beauty work among high-class football players, who stand in the limelight of a huge TV audience each weekend, may simply represent a form of impression management to showcase oneself in a positive way and generate symbolic capital.
This finding comes with strong implications for future research on the role of physical attractiveness in professional sport: Future research has to go beyond correlational analysis and needs to employ longitudinal research designs to be able to discriminate between different mechanisms at stake. Simple correlational analysis does not suffice for making conclusive inferences on the impact of attractiveness on football players’ careers. Moreover, as the current study leaves unclear why successful football players improve their physical appearance, future research should address beauty work and its financial and symbolic returns.
One limitation of this study is that it measured beauty solely based on facial attractiveness. According to Hakim (2010), beauty, sexual attractiveness, physical fitness, liveliness, charm, and style are distinctive features that can make a person attractive for others. Although some of these characteristics are hard to measure as they are not assessable with pictures (e.g., charm) or change quickly (e.g., style), it should be kept in mind that this study (as with many previous studies) reduces beauty to facial attractiveness while ignoring other (body) characteristics. Moreover, as an alternative to the “truth of consensus”-rating method, scholars have suggested a software-based approach, analyzing facial geometry, for instance, horizontal symmetry, ratio of nose to ear length or ratio of face width to face height (Hoegele et al., 2015). This is a promising approach so that future studies would do well to integrate rater-based as well as software-based methods for assessing facial attractiveness. Finally, this study solely focused on male athletes so that it remains uncertain whether these findings would also hold for female athletes. Previous studies on attractiveness and occupational success found stronger effects for women compared with men (Jæger, 2011). Similar findings were reported for female professional tennis players, whose popularity is much more driven by their attractiveness compared with male players (Konjer et al., 2019). However, in view of the fact that women’s football is less professionalized and commercialized as a sport in Germany (e.g., with regard to media coverage, salary levels, or endorsement deals), the incentives to invest into beauty and appearance may not be as high as in men’s football. Hence, replications of this study in women’s football, in other fields of professional sport, and in different domains of the entertainment industry would be helpful to assess whether the findings presented here are generalizable or an expression of peculiarities of European associational men’s football.
Abstract: Prior research has provided evidence that attractiveness is associated with work-related advantages. It is less clear, however, whether attractiveness is an antecedent or a consequence of professional success. To answer this question, associational football in Germany is used as an exemplifying case. Portrait pictures of German football players were retrieved, one picture from a very early career stage and one from a very late one. Attractiveness of these portraits was assessed by the “truth of consensus” method. Panel regression models are applied to analyze changes in attractiveness and relate these changes to professional success. Findings show that success as a footballer cannot be predicted with attractiveness at early career stages. Instead, the increase of attractiveness over time is more pronounced among very successful players. It is thus concluded that successful individuals are not more attractive in the very beginning, but improve their appearance throughout their careers.
Keywords: attractiveness, beauty, appearance, professional success, football
Discussion and Conclusion
Large cross-sectional studies on football in Germany had shown that attractiveness and success are correlated (Rosar et al., 2010, 2013, 2017). In the interpretation of this association, it was claimed that coaches may give attractive footballers an advantage in fielding decisions which may help attractive players to become successful. In particular, the interpretation that coaches favor more attractive players was put forward by Rosar and colleagues (2017). However, bearing in mind that football is one of the few professional domains where attractiveness has particularly no relevance as a productivity factor, this interpretation comes as a surprise. Our results lend more support to the notion that players who are fielded more often (and are thus more often in the public spotlight) invest more into their beauty. Although this needs to be tested in future research more explicitly (including measures for grooming), the findings presented here suggest that the beauty premium in sport is probably more accurately interpreted as a by-product of beauty work and not as a form of discrimination against less attractive players.
If this line of reasoning is correct, it is still unclear what motivates this beauty work: On one hand, professional athletes are offered huge financial rewards for attractiveness and popularity, because these qualities are valued by media and the sport industry. For an athlete, beauty work can thus be a form of strategic investment to reach a broader public beyond the narrow scope of regular football fans and, in doing so, increase his endorser qualities. David Beckham or Cristiano Ronaldo may be considered textbook examples of this strategy (Coad, 2005). In forms of sponsorship and marketing deals, beauty work may thus pay-off for athletes and lead to higher revenues. However, Hamermesh et al. (2002) have also contested the idea that additional earnings due to investments in physical appearance recover costs (e.g., for clothing and cosmetics). However, this study was not conducted in the realm of professional sport and may thus not hold true in this particular context. On the other hand, beauty work must not necessarily represent an investment strategy, but may simply be a form of “conspicuous consumption” (Veblen, 1899/2007). Conspicuous consumption refers to the acquisition of luxury goods, including expensive clothing, to publicly demonstrate wealth and a high social status. Hence, in this line of interpretation, the “returns” of beauty work do not tend to a monetary but to a symbolic level, aiming at distinction and prestige. Moreover, it was also claimed that showy spending increases sex appeal among men (Sundie et al., 2011). Hence, beauty work among high-class football players, who stand in the limelight of a huge TV audience each weekend, may simply represent a form of impression management to showcase oneself in a positive way and generate symbolic capital.
This finding comes with strong implications for future research on the role of physical attractiveness in professional sport: Future research has to go beyond correlational analysis and needs to employ longitudinal research designs to be able to discriminate between different mechanisms at stake. Simple correlational analysis does not suffice for making conclusive inferences on the impact of attractiveness on football players’ careers. Moreover, as the current study leaves unclear why successful football players improve their physical appearance, future research should address beauty work and its financial and symbolic returns.
One limitation of this study is that it measured beauty solely based on facial attractiveness. According to Hakim (2010), beauty, sexual attractiveness, physical fitness, liveliness, charm, and style are distinctive features that can make a person attractive for others. Although some of these characteristics are hard to measure as they are not assessable with pictures (e.g., charm) or change quickly (e.g., style), it should be kept in mind that this study (as with many previous studies) reduces beauty to facial attractiveness while ignoring other (body) characteristics. Moreover, as an alternative to the “truth of consensus”-rating method, scholars have suggested a software-based approach, analyzing facial geometry, for instance, horizontal symmetry, ratio of nose to ear length or ratio of face width to face height (Hoegele et al., 2015). This is a promising approach so that future studies would do well to integrate rater-based as well as software-based methods for assessing facial attractiveness. Finally, this study solely focused on male athletes so that it remains uncertain whether these findings would also hold for female athletes. Previous studies on attractiveness and occupational success found stronger effects for women compared with men (Jæger, 2011). Similar findings were reported for female professional tennis players, whose popularity is much more driven by their attractiveness compared with male players (Konjer et al., 2019). However, in view of the fact that women’s football is less professionalized and commercialized as a sport in Germany (e.g., with regard to media coverage, salary levels, or endorsement deals), the incentives to invest into beauty and appearance may not be as high as in men’s football. Hence, replications of this study in women’s football, in other fields of professional sport, and in different domains of the entertainment industry would be helpful to assess whether the findings presented here are generalizable or an expression of peculiarities of European associational men’s football.
It has been commonly believed that information in short-term memory (STM) is maintained in persistent delay-period spiking activity; experiments have revealed that information in STM can be maintained in neural passive states
Reevaluating the Role of Persistent Neural Activity in Short-Term Memory. Nicolas Y. Masse, Matthew C. Rosen, David J. Freedman. Trends in Cognitive Sciences, January 29 2020. https://doi.org/10.1016/j.tics.2019.12.014
Highlights
. It has been commonly believed that information in short-term memory (STM) is maintained in persistent delay-period spiking activity.
. Recent experiments have begun to question this assumption, as the strength of persistent activity appears greater for tasks that require active manipulation of the memoranda, as opposed to tasks that require only passive maintenance.
. New experiments have revealed that information in STM can be maintained in neural ‘hidden’ states, such as short-term synaptic plasticity.
. Machine-learning-based recurrent neural networks have been successfully trained to solve a diversity of working memory tasks and can be leveraged to understand putative neural substrates of STM.
Abstract: A traditional view of short-term working memory (STM) is that task-relevant information is maintained ‘online’ in persistent spiking activity. However, recent experimental and modeling studies have begun to question this long-held belief. In this review, we discuss new evidence demonstrating that information can be ‘silently’ maintained via short-term synaptic plasticity (STSP) without the need for persistent activity. We discuss how the neural mechanisms underlying STM are inextricably linked with the cognitive demands of the task, such that the passive maintenance and the active manipulation of information are subserved differently in the brain. Together, these recent findings point towards a more nuanced view of STM in which multiple substrates work in concert to support our ability to temporarily maintain and manipulate information.
Highlights
. It has been commonly believed that information in short-term memory (STM) is maintained in persistent delay-period spiking activity.
. Recent experiments have begun to question this assumption, as the strength of persistent activity appears greater for tasks that require active manipulation of the memoranda, as opposed to tasks that require only passive maintenance.
. New experiments have revealed that information in STM can be maintained in neural ‘hidden’ states, such as short-term synaptic plasticity.
. Machine-learning-based recurrent neural networks have been successfully trained to solve a diversity of working memory tasks and can be leveraged to understand putative neural substrates of STM.
Abstract: A traditional view of short-term working memory (STM) is that task-relevant information is maintained ‘online’ in persistent spiking activity. However, recent experimental and modeling studies have begun to question this long-held belief. In this review, we discuss new evidence demonstrating that information can be ‘silently’ maintained via short-term synaptic plasticity (STSP) without the need for persistent activity. We discuss how the neural mechanisms underlying STM are inextricably linked with the cognitive demands of the task, such that the passive maintenance and the active manipulation of information are subserved differently in the brain. Together, these recent findings point towards a more nuanced view of STM in which multiple substrates work in concert to support our ability to temporarily maintain and manipulate information.
The Origin of Our Modern Concept of Depression—The History of Melancholia From 1780-1880: A Review
The Origin of Our Modern Concept of Depression—The History of Melancholia From 1780-1880: A Review. Kenneth S. Kendler. JAMA Psychiatry, January 29, 2020. doi:10.1001/jamapsychiatry.2019.4709
Abstract: The modern concept of depression arose from earlier diagnostic formulations of melancholia over the hundred years from the 1780s to the 1880s. In this historical sketch, this evolution is traced from the writings of 12 authors outlining the central roles played by the concepts of faculty psychology and understandability. Five of the authors, writing from 1780 through the 1830s, including Cullen, Pinel, and Esquirol, defined melancholia as a disorder of intellect or judgment, a “partial insanity” often, but not always, associated with sadness. Two texts from the 1850s by Guislain, and Bucknill and Tuke were at the transition between paradigms. Both emphasized a neglected disorder—melancholia without delusions—arguing that it reflected a primary disorder of mood—not of intellect. In the final phase in the 1860s to 1880s, 5 authors (Griesinger, Sankey, Maudsley, Krafft-Ebing, and Kraepelin) all confronted the problem of the cause of delusional melancholia. Each author concluded that melancholia was a primary mood disorder and argued that the delusions emerged understandably from the abnormal mood. In this 100-year period, the explanation of delusional melancholia in faculty psychology terms reversed itself from an intellect to mood to a mood to intellect model. The great nosologists of the 19th century are often seen as creating our psychiatric disorders using a simple inductive process, clustering the symptoms, signs, and later the course of the patients. This history suggests 2 complexities to this narrative. First, in addition to bottom-up clinical studies, these nosologists were working top-down from theories of faculty psychology proposed by 18th century philosophers. Second, for patient groups experiencing disorders of multiple faculties, the nosologists used judgments about understandability to assign primary causal roles. This historical model suggests that the pathway from patient observation to the nosologic categories—the conceptual birth of our diagnostic categories—has been more complex than is often realized.
Introduction
Before the rise of modern psychiatry in the late 18th century, the concept of melancholia differed substantially from our modern view of depression,1-6 which did not emerge until the late 19th century.1,2,7,8 By examining key texts published from 1780 to 1880, I document the nature and timing of this shift through 3 phases. Two theories play important roles in this story: faculty psychology9-13 and understandability.13-16 Faculty psychology is defined as
The theory, in vogue particularly during the second half of the eighteenth and first half of the nineteenth centuries, that the mind is divided up into separate inherent powers or “faculties.”17(p253)
I focus on 2 of these inborn faculties, one predominant at the initiation of this story (intellect, understanding, or judgment), and the other whose rising influence I track across the 19th century: mood, affect, or moral (ie, psychological) sentiment.
Given the frequency of patients apparently experiencing disorders both of intellect and mood, the theory of faculty psychology posed a problem. To give a proper diagnosis, clinicians needed to distinguish between 3 hypotheses about such patients. Did they have 2 independent disorders, a primary disorder of intellect with a secondary mood disorder or a primary disorder of mood with a secondary disorder of intellect?13 A dominant approach to this problem, later popularized by Karl Jaspers,14,15 was that with careful observation and empathy, the clinician could discriminate between these hypotheses, for example, determining if a delusion (a disorder of intellect) could arise understandably from a disordered mood.
Phase 1: 1780-1830
In the first historical phase, all major authors emphasized that melancholia was primarily a disorder of intellect, often—but not always—accompanied by sadness.
I begin with the medical nosology of William Cullen (1710-1790), a physician and leading figure in the Scottish enlightenment. In his highly influential 1780 nosology,18,19 melancholia was placed within the class of neuroses (nervous disorders), and the order of vésanie (mental diseases/insanity) characterized as “a disorder of the functions of the judging faculty of the mind, without fever or sleepiness.”19 Melancholia was defined as “partial insanity without dyspepsia,” with the phrase “without dyspepsia” included to distinguish it from hypochondriasis. By partial insanity, Cullen meant that the delusions were limited to a single subject, leaving the affected individual with intact areas of intellectual functioning.
Phillipe Pinel (1745-1826),20,21 a major reformer and one of the founders of modern psychiatry, provided the following definition of melancholia in 1801:
Delirium (ie, delusions) exclusively upon one subject … free exercise in other respects of all the faculties of the understanding: in some cases, equanimity of disposition, or a state of unruffled satisfaction: in others, habitual depression and anxiety, and frequently a moroseness of character … and sometimes to an invincible disgust with life.21(p149)Like Cullen,18,19 Pinel’s definition emphasized intellectual dysfunction (eg, partial insanity), but he added a range of associated mood states. Some of the states reflect depression but another described emotional equanimity.
In his 1804 treatise on madness and suicide,”22 the English physician William Rowley (1742-1806) gave a succinct definition of melancholia that agrees in essential points with his predecessors, with the disordered intellect here termed “alienation of the mind”:
Madness, or insanity, is an alienation of the mind, without fever. It is distinguished into two species; melancholy, or mania…. The former is known by sullenness, taciturnity, meditation, dreadful apprehensions, and despair.22(p1)Rowley differs from his predecessors in associating melancholia only with the moods of sadness and anxiety.
In his 1817 monograph on melancholia,23 Maurice Roubaud-Luce’s description of melancholia resembled that of his French predecessor, Pinel,20,21 including its possible association with elevated mood states:
Melancholy is characterized by an exclusive and chronic delirium focused on a single object, or on a particular series of objects, with a free exercise of intellectual faculties on everything that is foreign to these objects. This condition is often accompanied by a deeply concentrated sadness, a state of dejection and stupor, and an ardent love of solitude. Sometimes also it excites, for no apparent reason, immoderate joy…. 23(p1)
Jean Esquirol (1772-1840), Pinel’s student and successor as leader of French psychiatry, coined the term lypemania as a synonym for melancholia.24,25 Like Rowley, in his 1838 textbook, he removed the association with mania-like partial insanities:
We consider it well defined, by saying that melancholy … or lypemania, is a cerebral malady, characterized by partial, chronic delirium, without fever, and sustained by a passion of a sad, debilitating or oppressive character.25(p203)
Phase 2: 1850-1860
In phase 2, the dominant view of melancholia as a primary disorder of intellect came under challenge.
Joseph Guislain (1789-1860), a Belgian alienist and director of the psychiatric hospital at Ghent, took a first step toward the modern view of depression. He described, in his 1852 text,26 6 elementary forms of mental maladies, one of which was mélancolie, defined as “mental pain—augmentation of sentiments of sadness.26(p94) He then described the relatively novel category of nondelusional melancholia, calling it
exclusively an exaggeration of affective feelings; it is a pathological emotion, a sadness, a grief, an anxiety, a fear, a fright, and nothing more. It is not a state which appreciably weakens conceptual faculties.26(p112)He continues:
The description that the [prior] authors gave us of this disease [melancholy] leaves something to be desired; almost all spoke of delusional melancholy, and none, to my knowledge, describes melancholy in its state of greatest simplicity: there are melancholies without delusions … without noticeable disturbance of intelligence or ideas. Melancholy without delusion is the simplest form under which the suffering mode can occur; it is a state of sadness, dejection … without notable aberration of imagination, judgement or intelligence … a despair dominates him; he is absorbed into this painful feeling.26(p186)
In their influential 1858 textbook, John Bucknill (1817-1897) and Daniel Tuke (1827-1895) took a further step away from the view of melancholia as primarily a disorder of intellect. In the section on melancholia, written by Tuke, he begins with the quotation above from Esquirol25 to which he adds a critical comment (italics added):
“We consider it well-defined,” he observes “by saying that melancholia or lypemania, is cerebral malady, characterized by partial chronic delirium, without fever, and sustained by a passion of a sad, debilitating, or oppressive character.” A definition sufficiently accurate, if we except the “chronic delirium,” disorder of the intellect not being, as we shall presently see, an essential part of the disorder.27(p152)
Tuke argues that delusions have been incorrectly understood as the primary melancholic symptom. Following Guislain,26 Tuke operationalizes this change by defining a simple form of melancholia in which “there is here no disorder of the intellect, strictly speaking; no delusion or hallucination.27(p158) Bucknill and Tuke are then more explicit about their new conceptualization of melancholia: “it can be shown that the disorder at present under consideration, may coexist with a sound condition of the purely intellectual part of our mental constitution.27(p159)
Tuke provides his rationale for this conceptual shift in his earlier chapter on classification. After reviewing prior nosologic systems, he writes of the importance of faculty psychology in psychiatric nosology: “The writer thinks there is much to be said in favor of the attempt to classify the various forms of insanity, according to the mental functions affected.”27(p95) He then quotes his coauthor, “Dr Bucknill observes that insanity may be either intellectual, emotional, or volitional.”27(p95) We cannot, he argues, base our nosology on the “physiology of the organ of the mind,” because we do not know it. But, he continues, “in the absence of this knowledge it would seem reasonable to adapt them to the affected function.”27(p95) We could then, he concludes, “speak of disorders of the intellect, sentiment, etc. instead of basing our classification exclusively on prominent symptoms.”27(p95) He formalizes the conclusion:
In bringing the phenomena of diseased mind into relation with such classification, we should endeavor to refer every form of disease to that class or group of the mental faculties which the disease necessarily, though not exclusively, involves in its course.27(p98)In his ideal nosology, idiocy, dementia, and monomania, which commonly manifests delusions and hallucinations, are disorders of the intellect while melancholia is considered a disorder of “moral sentiment,” that is, mood.
Phase 3: 1860-1883
Phase 3 continues the shift from the view that melancholia was predominantly a disorder of intellect to one of mood. But these authors also confronted the problem of delusional melancholia. If it too is primarily a disorder of mood, how can the emergence of delusions be explained? Their response to this question will incorporate the concept of understandability.
The first professor of psychiatry in Germany and a strong advocate for a brain-based psychiatry, Wilhelm Griesinger (1817-1868), early in his 1861 textbook,28,29 adopts a faculty psychological approach to psychiatric nosology in his chapter entitled “The Elementary Disorders in Mental Disease”:
In those cerebral affections which come under consideration as mental diseases, there are, as in all others, only three essentially distinct groups…. Thus, according to this threefold division, we have to consider successively each of the three leading groups of elementary disturbances—intellectual insanity, emotional insanity, and insanity of movement.29(p60)
Although like Guislain26 before him, Griesinger viewed melancholia as typically forming the first stage of a unitary psychosis: both of their descriptions are of relevance. Griesinger begins, “The fundamental affection in all these forms of disease consists in the morbid influence of a painful depressing negative affection—in a mentally painful state.”29(p209) That is, he clearly emphasized the affective nature of the disorder. He elaborates:
In many cases, after a period of longer or shorter duration, a state of vague mental and bodily discomfort … a state of mental pain becomes always more dominant and persistent…. This is the essential mental disorder in melancholia, and, so far as the patient himself is concerned, the mental pain consists in a profound feeling of ill-being, of inability to do anything, of suppression of the physical powers, of depression and sadness…. The patient can no longer rejoice in anything, not even the most pleasing.29(p223)
Earlier in the book, Griesinger sought to explain how disordered mood can produce delusions.
As to their contents, two leading differences are particularly to be observed in insane conceptions [one of which is] … somber, sad, and painful thoughts …. [which arise] from depressed states of the disposition, and gloomy ill-boding hallucinations, as language of abuse and mockery which the patient is always hearing, diabolical grimaces which he sees, etc. The false ideas and conclusions, which are attempts at explanation and vindications of the actual disposition in its effects, are spontaneously developed in the diseased mind according to the law of causality…. At first the delirious conceptions are fleeting … gradually, by continued repetition, they gain more body and form, repel opposing ideas … then they become constituent parts [of the “I”] … and the patient cannot divest himself of them.29(p71)
Early in his 1866 text, William Sankey (1813-1889), an asylum director and lecturer at University College London, outlined morbid psychiatric conditions of the intellect, emotions, and volition. He turned to discussing the development of melancholia:
The alterations in degree are such as an increase of grief, a depression of spirits going on to melancholy…. Such description of abnormal acts of mind belong to the emotions, and occur in the earlier stages, the later or more permanent alterations of kind may be manifested in the (a) intellect, (b) the disposition, (c) the manner, (d) temper, (e) habits, and (f) character of the individual.30(p25)
Therefore, primary alterations in emotions can lead to a range of developments in melancholia, including alterations in intellectual functioning including “in power of judgment, apprehension, imagination, argumentation, memory, or they may entertain distinct illusion [hallucination] or delusion.”30(p25) He captures this point in a case history of melancholia which he summarizes:
The progress of this case was therefore—simple depression, abstraction, forgetfulness, neglect of duties… religious fears, and morbid apprehensions and delusions… You see how closely nearly all these symptoms are connected with the emotions. Fear, apprehension, and dread are among the commonest phenomena.30(p30)
Early in his section on the varieties of insanity from his 1867 textbook,31 Henry Maudsley (1835-1918) adopted a faculty psychological orientation:
On a general survey of the symptoms of these varieties it is at once apparent that they fall into two well-marked groups one of these embracing all those cases in which the mode of feeling or the affective life is chiefly or solely perverted—in which the whole habit or manner of feeling, the mode of affection of the individual by events, is entirely changed; the other, those cases in which ideational or intellectual derangement predominates.31(p301)He then outlines how the effects of the mood disorder spread through other faculties:
Consequently, when there is perversion of the affective life, there will be morbid feeling and morbid action; the patient's whole manner of feeling, the mode of his affection by events, is unnatural, and the springs of his action are disordered; and the intellect is unable to check or control the morbid manifestations.31(p302)He later continues:
The different forms of affective insanity have not been properly recognised and exactly studied because they did not fall under the time-honoured divisions and the real manner of commencement of intellectual insanity in a disturbance of the affective life has frequently been overlooked.31(p321)
Maudsley then attacks the earlier views of melancholia—that the intellectual dysfunctions were primary and the mood disorder secondary (italics added):
It is necessary to guard against the mistake of supposing the delusion to be the cause of the passion, whether painful or gay …. Suddenly, it may be, an idea springs up in his mind that he is lost forever, or that he must commit suicide, or that he has committed murder and is about to be hanged; the vast and formless feeling of profound misery has taken form as a concrete idea —in other words, has become condensed into a definite delusion, this now being the expression of it. The delusion is not the cause of the feeling of misery, but is engendered of it, it is precipitated, as it were in a mind saturated with the feeling of inexpressible woe.31(p328)
Richard von Krafft-Ebing (1840-1902), among the most important late 19th century German-speaking neuropsychiatrists,32,33 wrote in his influential 1874 monograph on melancholia, “The basic phenomenon in melancholic insanity is simply mental depression, psychic pain in its elementary manifestation.”34(p1) By analogy with a peripheral neuralgia, melancholia transforms normal psychological experiences into anguish and sorrow. Affected individuals have repeated “painful distortions” of their experiences, “all his relations to the external world are different … he is unfeeling, homeless ... with unbearable despair.”34(p5)
In his section on melancholy with delusions and hallucinations, Krafft-Ebing writes
Let us look at the sources of these [symptoms]. Initially it is the altered sense of self of the patient, the consciousness of deep abasement … the fractured strength and ability to work, which require an explanation and, with advancing disturbance of consciousness, does not find this in the subjective aspect of the illness, but in the delusional changes of relationship to the external world, from which we are after all used to receiving the impulses for our feelings, ideas and ambitions. This formation of delusions is supported significantly by the deep disturbance of the perception of the world.34(p32)He then gives examples of how delusions of poverty, persecution, and impending punishment can emerge “in a psychological manner … from elementary disturbances of mood”34(p34):
Thus, deep depression of the sense of self, and the consciousness of mental impotence and physical inability to work, lead to the delusion of no longer being able to earn enough, of being impoverished, of starvation.34(p33)
Mental dysesthesia thus causes hostile apperception of the external world, as presumed suspicious glances, scornful gestures, abusive speeches from the environment join, leading to persecutory delusions…. Precordial anxiety and expectations of humiliation lead to the delusion that an actual danger is threatening [where] … a prior harmless action which is not even a crime … is formed into an actual crime.34(p34)
Emil Kraepelin’s views of melancholia, unencumbered by his later development of the category of manic-depressive illness, can be found in the first edition of his textbook published in 1883. He saw this syndrome as arising from “psychological anguish” when “the feelings of dissatisfaction, anxiety and general misery gains such strength that it constantly dominates the mood.”35(p190) He describes the emergence of depressive delusions:
… in milder cases … there is insight into his own illness. As a rule, however, critical ability becomes overwhelmed by powerful mood fluctuations, and the pathological change is transferred to the external world. It does not merely seem to be so dismal and bleak, but really is so. A further progression … can then give rise to formal delusions and a systematic distortion of external experiences.35(p191)
The writings of Krafft-Ebing32,33 and Kraepelin35 reflect a culmination in the development of the modern concept of depression, an illness resulting primarily from a disorder of mood, which can manifest delusions that do not reflect an independent disorder of judgment or intellect but rather a rise, in an understandable manner, from the affective disturbance. We see a clear continuity from these authors to DSM-III36 in the signs and symptoms of what we now call major depression.7,8
Discussion
In this historical sketch, which could not examine all relevant authors or provide helpful background materials, I document that, during the rise of modern psychiatry in the late 18th and early 19th century, the concept of melancholia was closely wedded to earlier views that it was fundamentally a disorder of intellect—a partial insanity—often, but not always, accompanied by sadness. This concept was seen, with modest variation, in writings from 1780 through the 1830s from both England (Cullen18,19 and Rowley22) and France (Pinel,20,21 Roubaud-Luce,23 and Esquirol24).
In this narrative, the first movement away from this paradigm was by Guislain,26 writing just after the mid-19th century, who defined elementary melancholia as a disorder of mood and then focused on the neglected but illustrative category of nondelusional melancholia. Such patients demonstrated no abnormalities of intellect or judgment. This form of melancholia was, he suggested, a disorder primarily of mood.
In 1858, 2 British authors, Bucknill and Tuke,27 went further, declaring explicitly, in the language of faculty psychology, that a disorder of the intellect was not an essential part of melancholia. However, this assertion left a key problem. How could the common occurrence of melancholia with delusions be explained if melancholia was primarily a disorder of mood?
Our final 5 authors—Griesinger,28 Sankey,30 Maudsley,31 Krafft-Ebing,32,34 and Kraepelin35—each accepted the primacy of mood in the cause of melancholia and addressed the problem of the origin of melancholic delusions. Griesinger argued that “the false ideas …are attempts at explanation.”29(p71) Sankey noted “how closely nearly all these [psychotic] symptoms are connected with the emotions.”30(p30) Maudsley stated, “The vast and formless feeling of profound misery has taken form as a concrete [delusional] idea…. The delusion is not the cause of the feeling of misery but is engendered of it.”31(p328) Krafft-Ebing presented a compelling explanation of the psychological origin of melancholic delusions including the nature of “delusional changes of relationship to the external world”34(p32) and sketched how melancholic symptoms could lead, understandably, to delusions of poverty, persecution, or punishment. Kraepelin described how “critical ability becomes overwhelmed by powerful mood fluctuations.”35(p191)
This review provides the historical context for our modern concept of mood-congruent psychotic features, which was first introduced in the research diagnostic criteria as “typical depressive delusions such as delusions of guilt, sin, poverty, nihilism, or self-deprecation,”37(p16) and then incorporated with modest changes in DSM-III36 and all subsequent DSM editions. Echoing the writings of authors reviewed herein, this list reflects delusions whose content can be understandably derived from the primary mood disturbance in major depression.
These historical observations have important implications for how we understand the nature of our psychiatric categories. A prominent narrative is that the great psychiatric nosologists of the 19th century acted as simple inductivists, seeing large numbers of patients with psychiatric disorders and, based initially on symptoms and signs and later also on course of illness, then sorting them into diagnostic categories. This inquiry suggests a more complex process.
First, as illustrated herein and described elsewhere,13,38,39 across Europe during the 19th century, systems of faculty psychology, innate functions of the human mind, were propounded by a range of philosophers, including Kant, Reid, and Stewart.10,38 These faculties provided influential a priori categories for psychiatric nosologists. As articulated explicitly by Tuke, absent a knowledge of pathophysiology, diagnostic categories should at least be based on the “affected function” (eg, “disorders of the intellect, sentiment, etc”27(p95)) rather than exclusively on symptoms.
Second, given the adoption of faculty psychology, nosologists had to confront the problem of the classification of patients apparently experiencing disorders of 2 faculties, such as individuals with delusional melancholia. Did these patients have 2 disorders or only 1 and, if so, which one? The creation of our modern concept of depression arose from an argument about the primacy of disordered intellect vs disordered mood in explaining the cause of delusional melancholia. The early model, consistent with the then dominant intellectualist view of insanity,40,41 assumed that disordered judgment was the essence of melancholia, which was first and foremost a disorder of intellect. Over the 19th century, this opinion was reversed. By the 1870s, it became widely accepted that melancholia was primarily a mood disorder. The argument that fueled that major diagnostic change appealed to understandability—that clinicians could empathically grasp how disordered mood could lead to particular kinds of delusions.
Rather than naive inductivism, a more realistic model for the development of psychiatric nosology in the 19th century would reflect a mixture of bottom-up and top-down processes. Psychiatric neuroscientists and geneticists working today are not studying the biological substrate of illnesses in patients classified from raw clinical experience. Rather, our diagnostic categories reflect clinical observations translated through mentalistic constructs from philosophers who divided the major functions of the human mind into faculties. An obvious question then is whether these faculties have a coherent biological substrate. In an 1857 essay, Henry Monro expressed concerns exactly on this point: Can we relate the metaphysical structure of mental faculties to brain structures? He wrote
Physiology points further than to the general truth that brain as a whole is the instrument of the mind as a whole, and gives us good reason to believe that the great faculties, the emotions, the sensations, and the intelligence, have distinguishable ganglia, sensoria, or spheres of action.42(p196)
The success of our efforts at understanding the biologic characteristics of major psychiatric disorders might therefore depend, in part, on how successfully the faculty psychology of 18th century philosophers reflected brain structure and function. Furthermore, our nosologic categories are influenced by empathy-based insights into the nature of psychological causation. When can a delusion be understood to derive from disordered mood rather than from a primary disorder of intellect? The degree to which these empathy-based mentalistic processes translate into a discernable neurobiology is not well known.
This history suggests that the path from patient observation to our nosologic categories and from there, hopefully, to a detectable pathophysiologic nature is more complex than is commonly realized.
Abstract: The modern concept of depression arose from earlier diagnostic formulations of melancholia over the hundred years from the 1780s to the 1880s. In this historical sketch, this evolution is traced from the writings of 12 authors outlining the central roles played by the concepts of faculty psychology and understandability. Five of the authors, writing from 1780 through the 1830s, including Cullen, Pinel, and Esquirol, defined melancholia as a disorder of intellect or judgment, a “partial insanity” often, but not always, associated with sadness. Two texts from the 1850s by Guislain, and Bucknill and Tuke were at the transition between paradigms. Both emphasized a neglected disorder—melancholia without delusions—arguing that it reflected a primary disorder of mood—not of intellect. In the final phase in the 1860s to 1880s, 5 authors (Griesinger, Sankey, Maudsley, Krafft-Ebing, and Kraepelin) all confronted the problem of the cause of delusional melancholia. Each author concluded that melancholia was a primary mood disorder and argued that the delusions emerged understandably from the abnormal mood. In this 100-year period, the explanation of delusional melancholia in faculty psychology terms reversed itself from an intellect to mood to a mood to intellect model. The great nosologists of the 19th century are often seen as creating our psychiatric disorders using a simple inductive process, clustering the symptoms, signs, and later the course of the patients. This history suggests 2 complexities to this narrative. First, in addition to bottom-up clinical studies, these nosologists were working top-down from theories of faculty psychology proposed by 18th century philosophers. Second, for patient groups experiencing disorders of multiple faculties, the nosologists used judgments about understandability to assign primary causal roles. This historical model suggests that the pathway from patient observation to the nosologic categories—the conceptual birth of our diagnostic categories—has been more complex than is often realized.
Introduction
Before the rise of modern psychiatry in the late 18th century, the concept of melancholia differed substantially from our modern view of depression,1-6 which did not emerge until the late 19th century.1,2,7,8 By examining key texts published from 1780 to 1880, I document the nature and timing of this shift through 3 phases. Two theories play important roles in this story: faculty psychology9-13 and understandability.13-16 Faculty psychology is defined as
The theory, in vogue particularly during the second half of the eighteenth and first half of the nineteenth centuries, that the mind is divided up into separate inherent powers or “faculties.”17(p253)
I focus on 2 of these inborn faculties, one predominant at the initiation of this story (intellect, understanding, or judgment), and the other whose rising influence I track across the 19th century: mood, affect, or moral (ie, psychological) sentiment.
Given the frequency of patients apparently experiencing disorders both of intellect and mood, the theory of faculty psychology posed a problem. To give a proper diagnosis, clinicians needed to distinguish between 3 hypotheses about such patients. Did they have 2 independent disorders, a primary disorder of intellect with a secondary mood disorder or a primary disorder of mood with a secondary disorder of intellect?13 A dominant approach to this problem, later popularized by Karl Jaspers,14,15 was that with careful observation and empathy, the clinician could discriminate between these hypotheses, for example, determining if a delusion (a disorder of intellect) could arise understandably from a disordered mood.
Phase 1: 1780-1830
In the first historical phase, all major authors emphasized that melancholia was primarily a disorder of intellect, often—but not always—accompanied by sadness.
I begin with the medical nosology of William Cullen (1710-1790), a physician and leading figure in the Scottish enlightenment. In his highly influential 1780 nosology,18,19 melancholia was placed within the class of neuroses (nervous disorders), and the order of vésanie (mental diseases/insanity) characterized as “a disorder of the functions of the judging faculty of the mind, without fever or sleepiness.”19 Melancholia was defined as “partial insanity without dyspepsia,” with the phrase “without dyspepsia” included to distinguish it from hypochondriasis. By partial insanity, Cullen meant that the delusions were limited to a single subject, leaving the affected individual with intact areas of intellectual functioning.
Phillipe Pinel (1745-1826),20,21 a major reformer and one of the founders of modern psychiatry, provided the following definition of melancholia in 1801:
Delirium (ie, delusions) exclusively upon one subject … free exercise in other respects of all the faculties of the understanding: in some cases, equanimity of disposition, or a state of unruffled satisfaction: in others, habitual depression and anxiety, and frequently a moroseness of character … and sometimes to an invincible disgust with life.21(p149)Like Cullen,18,19 Pinel’s definition emphasized intellectual dysfunction (eg, partial insanity), but he added a range of associated mood states. Some of the states reflect depression but another described emotional equanimity.
In his 1804 treatise on madness and suicide,”22 the English physician William Rowley (1742-1806) gave a succinct definition of melancholia that agrees in essential points with his predecessors, with the disordered intellect here termed “alienation of the mind”:
Madness, or insanity, is an alienation of the mind, without fever. It is distinguished into two species; melancholy, or mania…. The former is known by sullenness, taciturnity, meditation, dreadful apprehensions, and despair.22(p1)Rowley differs from his predecessors in associating melancholia only with the moods of sadness and anxiety.
In his 1817 monograph on melancholia,23 Maurice Roubaud-Luce’s description of melancholia resembled that of his French predecessor, Pinel,20,21 including its possible association with elevated mood states:
Melancholy is characterized by an exclusive and chronic delirium focused on a single object, or on a particular series of objects, with a free exercise of intellectual faculties on everything that is foreign to these objects. This condition is often accompanied by a deeply concentrated sadness, a state of dejection and stupor, and an ardent love of solitude. Sometimes also it excites, for no apparent reason, immoderate joy…. 23(p1)
Jean Esquirol (1772-1840), Pinel’s student and successor as leader of French psychiatry, coined the term lypemania as a synonym for melancholia.24,25 Like Rowley, in his 1838 textbook, he removed the association with mania-like partial insanities:
We consider it well defined, by saying that melancholy … or lypemania, is a cerebral malady, characterized by partial, chronic delirium, without fever, and sustained by a passion of a sad, debilitating or oppressive character.25(p203)
Phase 2: 1850-1860
In phase 2, the dominant view of melancholia as a primary disorder of intellect came under challenge.
Joseph Guislain (1789-1860), a Belgian alienist and director of the psychiatric hospital at Ghent, took a first step toward the modern view of depression. He described, in his 1852 text,26 6 elementary forms of mental maladies, one of which was mélancolie, defined as “mental pain—augmentation of sentiments of sadness.26(p94) He then described the relatively novel category of nondelusional melancholia, calling it
exclusively an exaggeration of affective feelings; it is a pathological emotion, a sadness, a grief, an anxiety, a fear, a fright, and nothing more. It is not a state which appreciably weakens conceptual faculties.26(p112)He continues:
The description that the [prior] authors gave us of this disease [melancholy] leaves something to be desired; almost all spoke of delusional melancholy, and none, to my knowledge, describes melancholy in its state of greatest simplicity: there are melancholies without delusions … without noticeable disturbance of intelligence or ideas. Melancholy without delusion is the simplest form under which the suffering mode can occur; it is a state of sadness, dejection … without notable aberration of imagination, judgement or intelligence … a despair dominates him; he is absorbed into this painful feeling.26(p186)
In their influential 1858 textbook, John Bucknill (1817-1897) and Daniel Tuke (1827-1895) took a further step away from the view of melancholia as primarily a disorder of intellect. In the section on melancholia, written by Tuke, he begins with the quotation above from Esquirol25 to which he adds a critical comment (italics added):
“We consider it well-defined,” he observes “by saying that melancholia or lypemania, is cerebral malady, characterized by partial chronic delirium, without fever, and sustained by a passion of a sad, debilitating, or oppressive character.” A definition sufficiently accurate, if we except the “chronic delirium,” disorder of the intellect not being, as we shall presently see, an essential part of the disorder.27(p152)
Tuke argues that delusions have been incorrectly understood as the primary melancholic symptom. Following Guislain,26 Tuke operationalizes this change by defining a simple form of melancholia in which “there is here no disorder of the intellect, strictly speaking; no delusion or hallucination.27(p158) Bucknill and Tuke are then more explicit about their new conceptualization of melancholia: “it can be shown that the disorder at present under consideration, may coexist with a sound condition of the purely intellectual part of our mental constitution.27(p159)
Tuke provides his rationale for this conceptual shift in his earlier chapter on classification. After reviewing prior nosologic systems, he writes of the importance of faculty psychology in psychiatric nosology: “The writer thinks there is much to be said in favor of the attempt to classify the various forms of insanity, according to the mental functions affected.”27(p95) He then quotes his coauthor, “Dr Bucknill observes that insanity may be either intellectual, emotional, or volitional.”27(p95) We cannot, he argues, base our nosology on the “physiology of the organ of the mind,” because we do not know it. But, he continues, “in the absence of this knowledge it would seem reasonable to adapt them to the affected function.”27(p95) We could then, he concludes, “speak of disorders of the intellect, sentiment, etc. instead of basing our classification exclusively on prominent symptoms.”27(p95) He formalizes the conclusion:
In bringing the phenomena of diseased mind into relation with such classification, we should endeavor to refer every form of disease to that class or group of the mental faculties which the disease necessarily, though not exclusively, involves in its course.27(p98)In his ideal nosology, idiocy, dementia, and monomania, which commonly manifests delusions and hallucinations, are disorders of the intellect while melancholia is considered a disorder of “moral sentiment,” that is, mood.
Phase 3: 1860-1883
Phase 3 continues the shift from the view that melancholia was predominantly a disorder of intellect to one of mood. But these authors also confronted the problem of delusional melancholia. If it too is primarily a disorder of mood, how can the emergence of delusions be explained? Their response to this question will incorporate the concept of understandability.
The first professor of psychiatry in Germany and a strong advocate for a brain-based psychiatry, Wilhelm Griesinger (1817-1868), early in his 1861 textbook,28,29 adopts a faculty psychological approach to psychiatric nosology in his chapter entitled “The Elementary Disorders in Mental Disease”:
In those cerebral affections which come under consideration as mental diseases, there are, as in all others, only three essentially distinct groups…. Thus, according to this threefold division, we have to consider successively each of the three leading groups of elementary disturbances—intellectual insanity, emotional insanity, and insanity of movement.29(p60)
Although like Guislain26 before him, Griesinger viewed melancholia as typically forming the first stage of a unitary psychosis: both of their descriptions are of relevance. Griesinger begins, “The fundamental affection in all these forms of disease consists in the morbid influence of a painful depressing negative affection—in a mentally painful state.”29(p209) That is, he clearly emphasized the affective nature of the disorder. He elaborates:
In many cases, after a period of longer or shorter duration, a state of vague mental and bodily discomfort … a state of mental pain becomes always more dominant and persistent…. This is the essential mental disorder in melancholia, and, so far as the patient himself is concerned, the mental pain consists in a profound feeling of ill-being, of inability to do anything, of suppression of the physical powers, of depression and sadness…. The patient can no longer rejoice in anything, not even the most pleasing.29(p223)
Earlier in the book, Griesinger sought to explain how disordered mood can produce delusions.
As to their contents, two leading differences are particularly to be observed in insane conceptions [one of which is] … somber, sad, and painful thoughts …. [which arise] from depressed states of the disposition, and gloomy ill-boding hallucinations, as language of abuse and mockery which the patient is always hearing, diabolical grimaces which he sees, etc. The false ideas and conclusions, which are attempts at explanation and vindications of the actual disposition in its effects, are spontaneously developed in the diseased mind according to the law of causality…. At first the delirious conceptions are fleeting … gradually, by continued repetition, they gain more body and form, repel opposing ideas … then they become constituent parts [of the “I”] … and the patient cannot divest himself of them.29(p71)
Early in his 1866 text, William Sankey (1813-1889), an asylum director and lecturer at University College London, outlined morbid psychiatric conditions of the intellect, emotions, and volition. He turned to discussing the development of melancholia:
The alterations in degree are such as an increase of grief, a depression of spirits going on to melancholy…. Such description of abnormal acts of mind belong to the emotions, and occur in the earlier stages, the later or more permanent alterations of kind may be manifested in the (a) intellect, (b) the disposition, (c) the manner, (d) temper, (e) habits, and (f) character of the individual.30(p25)
Therefore, primary alterations in emotions can lead to a range of developments in melancholia, including alterations in intellectual functioning including “in power of judgment, apprehension, imagination, argumentation, memory, or they may entertain distinct illusion [hallucination] or delusion.”30(p25) He captures this point in a case history of melancholia which he summarizes:
The progress of this case was therefore—simple depression, abstraction, forgetfulness, neglect of duties… religious fears, and morbid apprehensions and delusions… You see how closely nearly all these symptoms are connected with the emotions. Fear, apprehension, and dread are among the commonest phenomena.30(p30)
Early in his section on the varieties of insanity from his 1867 textbook,31 Henry Maudsley (1835-1918) adopted a faculty psychological orientation:
On a general survey of the symptoms of these varieties it is at once apparent that they fall into two well-marked groups one of these embracing all those cases in which the mode of feeling or the affective life is chiefly or solely perverted—in which the whole habit or manner of feeling, the mode of affection of the individual by events, is entirely changed; the other, those cases in which ideational or intellectual derangement predominates.31(p301)He then outlines how the effects of the mood disorder spread through other faculties:
Consequently, when there is perversion of the affective life, there will be morbid feeling and morbid action; the patient's whole manner of feeling, the mode of his affection by events, is unnatural, and the springs of his action are disordered; and the intellect is unable to check or control the morbid manifestations.31(p302)He later continues:
The different forms of affective insanity have not been properly recognised and exactly studied because they did not fall under the time-honoured divisions and the real manner of commencement of intellectual insanity in a disturbance of the affective life has frequently been overlooked.31(p321)
Maudsley then attacks the earlier views of melancholia—that the intellectual dysfunctions were primary and the mood disorder secondary (italics added):
It is necessary to guard against the mistake of supposing the delusion to be the cause of the passion, whether painful or gay …. Suddenly, it may be, an idea springs up in his mind that he is lost forever, or that he must commit suicide, or that he has committed murder and is about to be hanged; the vast and formless feeling of profound misery has taken form as a concrete idea —in other words, has become condensed into a definite delusion, this now being the expression of it. The delusion is not the cause of the feeling of misery, but is engendered of it, it is precipitated, as it were in a mind saturated with the feeling of inexpressible woe.31(p328)
Richard von Krafft-Ebing (1840-1902), among the most important late 19th century German-speaking neuropsychiatrists,32,33 wrote in his influential 1874 monograph on melancholia, “The basic phenomenon in melancholic insanity is simply mental depression, psychic pain in its elementary manifestation.”34(p1) By analogy with a peripheral neuralgia, melancholia transforms normal psychological experiences into anguish and sorrow. Affected individuals have repeated “painful distortions” of their experiences, “all his relations to the external world are different … he is unfeeling, homeless ... with unbearable despair.”34(p5)
In his section on melancholy with delusions and hallucinations, Krafft-Ebing writes
Let us look at the sources of these [symptoms]. Initially it is the altered sense of self of the patient, the consciousness of deep abasement … the fractured strength and ability to work, which require an explanation and, with advancing disturbance of consciousness, does not find this in the subjective aspect of the illness, but in the delusional changes of relationship to the external world, from which we are after all used to receiving the impulses for our feelings, ideas and ambitions. This formation of delusions is supported significantly by the deep disturbance of the perception of the world.34(p32)He then gives examples of how delusions of poverty, persecution, and impending punishment can emerge “in a psychological manner … from elementary disturbances of mood”34(p34):
Thus, deep depression of the sense of self, and the consciousness of mental impotence and physical inability to work, lead to the delusion of no longer being able to earn enough, of being impoverished, of starvation.34(p33)
Mental dysesthesia thus causes hostile apperception of the external world, as presumed suspicious glances, scornful gestures, abusive speeches from the environment join, leading to persecutory delusions…. Precordial anxiety and expectations of humiliation lead to the delusion that an actual danger is threatening [where] … a prior harmless action which is not even a crime … is formed into an actual crime.34(p34)
Emil Kraepelin’s views of melancholia, unencumbered by his later development of the category of manic-depressive illness, can be found in the first edition of his textbook published in 1883. He saw this syndrome as arising from “psychological anguish” when “the feelings of dissatisfaction, anxiety and general misery gains such strength that it constantly dominates the mood.”35(p190) He describes the emergence of depressive delusions:
… in milder cases … there is insight into his own illness. As a rule, however, critical ability becomes overwhelmed by powerful mood fluctuations, and the pathological change is transferred to the external world. It does not merely seem to be so dismal and bleak, but really is so. A further progression … can then give rise to formal delusions and a systematic distortion of external experiences.35(p191)
The writings of Krafft-Ebing32,33 and Kraepelin35 reflect a culmination in the development of the modern concept of depression, an illness resulting primarily from a disorder of mood, which can manifest delusions that do not reflect an independent disorder of judgment or intellect but rather a rise, in an understandable manner, from the affective disturbance. We see a clear continuity from these authors to DSM-III36 in the signs and symptoms of what we now call major depression.7,8
Discussion
In this historical sketch, which could not examine all relevant authors or provide helpful background materials, I document that, during the rise of modern psychiatry in the late 18th and early 19th century, the concept of melancholia was closely wedded to earlier views that it was fundamentally a disorder of intellect—a partial insanity—often, but not always, accompanied by sadness. This concept was seen, with modest variation, in writings from 1780 through the 1830s from both England (Cullen18,19 and Rowley22) and France (Pinel,20,21 Roubaud-Luce,23 and Esquirol24).
In this narrative, the first movement away from this paradigm was by Guislain,26 writing just after the mid-19th century, who defined elementary melancholia as a disorder of mood and then focused on the neglected but illustrative category of nondelusional melancholia. Such patients demonstrated no abnormalities of intellect or judgment. This form of melancholia was, he suggested, a disorder primarily of mood.
In 1858, 2 British authors, Bucknill and Tuke,27 went further, declaring explicitly, in the language of faculty psychology, that a disorder of the intellect was not an essential part of melancholia. However, this assertion left a key problem. How could the common occurrence of melancholia with delusions be explained if melancholia was primarily a disorder of mood?
Our final 5 authors—Griesinger,28 Sankey,30 Maudsley,31 Krafft-Ebing,32,34 and Kraepelin35—each accepted the primacy of mood in the cause of melancholia and addressed the problem of the origin of melancholic delusions. Griesinger argued that “the false ideas …are attempts at explanation.”29(p71) Sankey noted “how closely nearly all these [psychotic] symptoms are connected with the emotions.”30(p30) Maudsley stated, “The vast and formless feeling of profound misery has taken form as a concrete [delusional] idea…. The delusion is not the cause of the feeling of misery but is engendered of it.”31(p328) Krafft-Ebing presented a compelling explanation of the psychological origin of melancholic delusions including the nature of “delusional changes of relationship to the external world”34(p32) and sketched how melancholic symptoms could lead, understandably, to delusions of poverty, persecution, or punishment. Kraepelin described how “critical ability becomes overwhelmed by powerful mood fluctuations.”35(p191)
This review provides the historical context for our modern concept of mood-congruent psychotic features, which was first introduced in the research diagnostic criteria as “typical depressive delusions such as delusions of guilt, sin, poverty, nihilism, or self-deprecation,”37(p16) and then incorporated with modest changes in DSM-III36 and all subsequent DSM editions. Echoing the writings of authors reviewed herein, this list reflects delusions whose content can be understandably derived from the primary mood disturbance in major depression.
These historical observations have important implications for how we understand the nature of our psychiatric categories. A prominent narrative is that the great psychiatric nosologists of the 19th century acted as simple inductivists, seeing large numbers of patients with psychiatric disorders and, based initially on symptoms and signs and later also on course of illness, then sorting them into diagnostic categories. This inquiry suggests a more complex process.
First, as illustrated herein and described elsewhere,13,38,39 across Europe during the 19th century, systems of faculty psychology, innate functions of the human mind, were propounded by a range of philosophers, including Kant, Reid, and Stewart.10,38 These faculties provided influential a priori categories for psychiatric nosologists. As articulated explicitly by Tuke, absent a knowledge of pathophysiology, diagnostic categories should at least be based on the “affected function” (eg, “disorders of the intellect, sentiment, etc”27(p95)) rather than exclusively on symptoms.
Second, given the adoption of faculty psychology, nosologists had to confront the problem of the classification of patients apparently experiencing disorders of 2 faculties, such as individuals with delusional melancholia. Did these patients have 2 disorders or only 1 and, if so, which one? The creation of our modern concept of depression arose from an argument about the primacy of disordered intellect vs disordered mood in explaining the cause of delusional melancholia. The early model, consistent with the then dominant intellectualist view of insanity,40,41 assumed that disordered judgment was the essence of melancholia, which was first and foremost a disorder of intellect. Over the 19th century, this opinion was reversed. By the 1870s, it became widely accepted that melancholia was primarily a mood disorder. The argument that fueled that major diagnostic change appealed to understandability—that clinicians could empathically grasp how disordered mood could lead to particular kinds of delusions.
Rather than naive inductivism, a more realistic model for the development of psychiatric nosology in the 19th century would reflect a mixture of bottom-up and top-down processes. Psychiatric neuroscientists and geneticists working today are not studying the biological substrate of illnesses in patients classified from raw clinical experience. Rather, our diagnostic categories reflect clinical observations translated through mentalistic constructs from philosophers who divided the major functions of the human mind into faculties. An obvious question then is whether these faculties have a coherent biological substrate. In an 1857 essay, Henry Monro expressed concerns exactly on this point: Can we relate the metaphysical structure of mental faculties to brain structures? He wrote
Physiology points further than to the general truth that brain as a whole is the instrument of the mind as a whole, and gives us good reason to believe that the great faculties, the emotions, the sensations, and the intelligence, have distinguishable ganglia, sensoria, or spheres of action.42(p196)
The success of our efforts at understanding the biologic characteristics of major psychiatric disorders might therefore depend, in part, on how successfully the faculty psychology of 18th century philosophers reflected brain structure and function. Furthermore, our nosologic categories are influenced by empathy-based insights into the nature of psychological causation. When can a delusion be understood to derive from disordered mood rather than from a primary disorder of intellect? The degree to which these empathy-based mentalistic processes translate into a discernable neurobiology is not well known.
This history suggests that the path from patient observation to our nosologic categories and from there, hopefully, to a detectable pathophysiologic nature is more complex than is commonly realized.
Online perspective-taking experiments have demonstrated great potential in reducing prejudice towards disadvantaged groups, but had no meaningful causal effect on social welfare attitudes
Bor, Alexander, and Gábor Simonovits. 2020. “Empathy, Deservingness, and Preferences for Welfare Assistance: A Large-scale Online Perspective-taking Experiment.” PsyArXiv. January 29. doi:10.31234/osf.io/d4sm9
Abstract: Online perspective-taking experiments have demonstrated great potential in reducing prejudice towards disadvantaged groups such as refugees or the Roma. These studies trigger the psychological process of empathy and evoke feelings of compassion. Meanwhile, a growing literature argues that compassion towards the poor is an important predictor of support for social welfare. This paper bridges these two literatures and predicts that perspective-taking with the poor could increase support for welfare assistance. This hypothesis is tested with a pre-registered experiment conducted on a large and diverse online sample of US citizens (N=3,431). Our results suggest that participants engaged with the perspective-taking exercise, wrote eloquent, often emotional essays. Nevertheless, perspective-taking had no meaningful causal effect on social welfare attitudes; we can confidently rule out effects exceeding 2 points on a 100 points scale. These results cast serious doubt on perspective-taking as a viable online tool to create compassion towards the poor.
Discussion
In this paper, we have tested whether perspective-taking is a viable tool for increasing support for welfare redistribution. Relying on an original, carefully designed, well-powered, and pre-registered survey experiment elded to a representative sample of US citizens, we found that it is not. Similarly to successful interventions, we tested the impact of a particular stimulus, describing the experiences of a single target and emphasizing a particular set of challenges that poor people in the US face (unemployment, health problems, housing problems, single parenthood).
Thus, our conclusions about the possible e ectiveness of perspective-taking intervention are necessarily limited: We have no way of knowing if large or even small changes in the stimulus used here could have led to a more e ective intervention.
This leads to the question of the extent to which these null ndings advance our understanding of either the class of interventions or the substantive target attitude that we study.
This issue should be understood in the broader context of how the published experimental literature characterizes the e ect of a di erent class of interventions. There is ample evidence that published research over-represents successful interventions compared to the universe of social science experiments (Franco, Malhotra and Simonovits 2014; 2016). For a more complete understanding of how a given class of interventions – such as perspective-taking – works, one also needs to consider unsuccessful examples.
That said, it is also important to emphasize why we think that our null results are surprising. First, our experimental design relied on a heavy dose of deservingness cues, which, according to previous research, has a large and sometimes long-lasting e ect on support for redistribution. We expected the perspective taking exercise to amplify the e ects of these deservingness cues but found that it nulliffed it.
Second, our findings are surprising considering a growing line of research employing perspective taking to reduce prejudice against various groups from refugees to transgender individuals.
Our results suggest that prejudice against the poor and attitudes towards government help for the poor may be more di cult to shape than attitudes towards these other marginalized groups.
Third, our experimental design likely constitutes a liberal test of our hypothesis. Besides relying heavily on deservingness cues, we measure the dependent variable with a composite index of ten items after a distractor task lasting a few minutes. For this reason, the experiment should be able to pick up even small, fleeting effects. Finally, it is noteworthy that the analysis of the essays reveals that participants have been very attentive and engaged in the exercise. We have no reason to believe that if we had conducted our experiment in the lab, we would see different results.
At the same time, the literature also o ers some explanations for our failure to bring about attitude change using our perspective-taking intervention. On the one hand, our treatment might have proven too weak in the sense that even though subjects felt empathy towards the individual depicted in the vignette, these emotions did not spill over to people in need in general, perhaps because subjects viewed the vignette as an \exception" to some deeply held stereotypes about poor people.
On the other hand, intense exposure to a story about a person in need might have led to emotional reactions moving counter to our hypothesized e ect. For instance, as argued by Sands (2017) exposure to poverty might have provoked anxiety in subjects about their own relative status, suppressing their support for policies helping others. Similarly, as pointed out by Simas, Clifford and Kirkland (2020), heightened empathy might exacerbate in-group bias, leading to hostile attitudes towards members of an out-group.
Abstract: Online perspective-taking experiments have demonstrated great potential in reducing prejudice towards disadvantaged groups such as refugees or the Roma. These studies trigger the psychological process of empathy and evoke feelings of compassion. Meanwhile, a growing literature argues that compassion towards the poor is an important predictor of support for social welfare. This paper bridges these two literatures and predicts that perspective-taking with the poor could increase support for welfare assistance. This hypothesis is tested with a pre-registered experiment conducted on a large and diverse online sample of US citizens (N=3,431). Our results suggest that participants engaged with the perspective-taking exercise, wrote eloquent, often emotional essays. Nevertheless, perspective-taking had no meaningful causal effect on social welfare attitudes; we can confidently rule out effects exceeding 2 points on a 100 points scale. These results cast serious doubt on perspective-taking as a viable online tool to create compassion towards the poor.
Discussion
In this paper, we have tested whether perspective-taking is a viable tool for increasing support for welfare redistribution. Relying on an original, carefully designed, well-powered, and pre-registered survey experiment elded to a representative sample of US citizens, we found that it is not. Similarly to successful interventions, we tested the impact of a particular stimulus, describing the experiences of a single target and emphasizing a particular set of challenges that poor people in the US face (unemployment, health problems, housing problems, single parenthood).
Thus, our conclusions about the possible e ectiveness of perspective-taking intervention are necessarily limited: We have no way of knowing if large or even small changes in the stimulus used here could have led to a more e ective intervention.
This leads to the question of the extent to which these null ndings advance our understanding of either the class of interventions or the substantive target attitude that we study.
This issue should be understood in the broader context of how the published experimental literature characterizes the e ect of a di erent class of interventions. There is ample evidence that published research over-represents successful interventions compared to the universe of social science experiments (Franco, Malhotra and Simonovits 2014; 2016). For a more complete understanding of how a given class of interventions – such as perspective-taking – works, one also needs to consider unsuccessful examples.
That said, it is also important to emphasize why we think that our null results are surprising. First, our experimental design relied on a heavy dose of deservingness cues, which, according to previous research, has a large and sometimes long-lasting e ect on support for redistribution. We expected the perspective taking exercise to amplify the e ects of these deservingness cues but found that it nulliffed it.
Second, our findings are surprising considering a growing line of research employing perspective taking to reduce prejudice against various groups from refugees to transgender individuals.
Our results suggest that prejudice against the poor and attitudes towards government help for the poor may be more di cult to shape than attitudes towards these other marginalized groups.
Third, our experimental design likely constitutes a liberal test of our hypothesis. Besides relying heavily on deservingness cues, we measure the dependent variable with a composite index of ten items after a distractor task lasting a few minutes. For this reason, the experiment should be able to pick up even small, fleeting effects. Finally, it is noteworthy that the analysis of the essays reveals that participants have been very attentive and engaged in the exercise. We have no reason to believe that if we had conducted our experiment in the lab, we would see different results.
At the same time, the literature also o ers some explanations for our failure to bring about attitude change using our perspective-taking intervention. On the one hand, our treatment might have proven too weak in the sense that even though subjects felt empathy towards the individual depicted in the vignette, these emotions did not spill over to people in need in general, perhaps because subjects viewed the vignette as an \exception" to some deeply held stereotypes about poor people.
On the other hand, intense exposure to a story about a person in need might have led to emotional reactions moving counter to our hypothesized e ect. For instance, as argued by Sands (2017) exposure to poverty might have provoked anxiety in subjects about their own relative status, suppressing their support for policies helping others. Similarly, as pointed out by Simas, Clifford and Kirkland (2020), heightened empathy might exacerbate in-group bias, leading to hostile attitudes towards members of an out-group.
What We Owe to Family: Agents who helped a stranger were judged as more morally good & trustworthy than those who helped kin, but agents who helped a stranger instead of kin were judged as less morally good & trustworthy
What We Owe to Family: The Impact of Special Obligations on Moral Judgment. Ryan M. McManus, Max Kleiman-Weiner, Liane Young. Psychological Science, January 28, 2020. https://doi.org/10.1177/0956797619900321
Abstract: Although people often recognize the moral value of impartial behavior (i.e., not favoring specific individuals), it is unclear when, if ever, people recognize the moral value of partiality. The current studies investigated whether information about special obligations to specific individuals, particularly kin, is integrated into moral judgments. In Studies 1 and 2, agents who helped a stranger were judged as more morally good and trustworthy than those who helped kin, but agents who helped a stranger, instead of kin were judged as less morally good and trustworthy than those who did the opposite. In Studies 3 and 4, agents who simply neglected a stranger were judged as less morally bad and untrustworthy than those who neglected kin. Study 4 also demonstrated that the violation (vs. fulfillment) of perceived obligations underlaid all judgment patterns. Study 5 demonstrated boundary conditions: When occupying roles requiring impartiality, agents who helped a stranger instead of kin were judged as more morally good and trustworthy than agents who did the opposite. These findings illuminate the importance of obligations in structuring moral judgment.
Keywords: morality, obligation, prosocial behavior, impartiality, open data, open materials, preregistered
Abstract: Although people often recognize the moral value of impartial behavior (i.e., not favoring specific individuals), it is unclear when, if ever, people recognize the moral value of partiality. The current studies investigated whether information about special obligations to specific individuals, particularly kin, is integrated into moral judgments. In Studies 1 and 2, agents who helped a stranger were judged as more morally good and trustworthy than those who helped kin, but agents who helped a stranger, instead of kin were judged as less morally good and trustworthy than those who did the opposite. In Studies 3 and 4, agents who simply neglected a stranger were judged as less morally bad and untrustworthy than those who neglected kin. Study 4 also demonstrated that the violation (vs. fulfillment) of perceived obligations underlaid all judgment patterns. Study 5 demonstrated boundary conditions: When occupying roles requiring impartiality, agents who helped a stranger instead of kin were judged as more morally good and trustworthy than agents who did the opposite. These findings illuminate the importance of obligations in structuring moral judgment.
Keywords: morality, obligation, prosocial behavior, impartiality, open data, open materials, preregistered
Male bowerbirds add berries to their bowers to increase attractiveness to choosy mates; when berries are added artificially, increased intrasexual aggression in the form of bower destructions by neighbouring rivals occur
From 2002... Bower decorations attract females but provoke other male spotted bowerbirds: bower owners resolve this trade-off. Joah Robert Madden. Proceedings of the Royal Society B, Volume 269, Issue 1498, July 7 2002. https://doi.org/10.1098/rspb.2002.1988
Abstract: Elaborate secondary sexual traits offset the costs that they impose on their bearer by facilitating reproductive benefits, through increased success in intrasexual contests or increased attractiveness to choosy mates. Some traits enhance both strategies. Conversely, I show that spotted bowerbirds Chlamydera maculata may face a trade–off. The trait that best predicts their mating success, numbers of Solanum berries exhibited on a bower, also provokes increased intrasexual aggression in the form of bower destructions by neighbouring bower owners, which reduce the quality of the male's bower. At natural berry numbers, levels of mating success in the population are skewed, but levels of destruction do not vary with berry number. When berry numbers are artificially exaggerated, increased levels of destructions occur, but mating success does not increase. When offered excess berries, either to add to the bower or artificially placed on the bower, bower owners preferred to use numbers of berries related to the number that they displayed naturally. This decision is made without direct experience of the attendant changes in destruction or mating success. This indicates that bower owners may assess their own social standing in relation to their neighbours and modulate their display accordingly.
Abstract: Elaborate secondary sexual traits offset the costs that they impose on their bearer by facilitating reproductive benefits, through increased success in intrasexual contests or increased attractiveness to choosy mates. Some traits enhance both strategies. Conversely, I show that spotted bowerbirds Chlamydera maculata may face a trade–off. The trait that best predicts their mating success, numbers of Solanum berries exhibited on a bower, also provokes increased intrasexual aggression in the form of bower destructions by neighbouring bower owners, which reduce the quality of the male's bower. At natural berry numbers, levels of mating success in the population are skewed, but levels of destruction do not vary with berry number. When berry numbers are artificially exaggerated, increased levels of destructions occur, but mating success does not increase. When offered excess berries, either to add to the bower or artificially placed on the bower, bower owners preferred to use numbers of berries related to the number that they displayed naturally. This decision is made without direct experience of the attendant changes in destruction or mating success. This indicates that bower owners may assess their own social standing in relation to their neighbours and modulate their display accordingly.
Germ theory, long before it led to medical treatments, drove down mortality rates by revolutionizing sanitation and hygiene
Draining the swamp. Jason Crawford. The Roots of Progress, Jan 28. https://rootsofprogress.org/draining-the-swamp
Excerpts (the original link has references & lots of charts... interesting throughout):
And the surprising thing I found is that infectious disease mortality rates have been declining steadily since long before vaccines or antibiotics.
I was surprised to learn that sanitation efforts began as early as the 1700s—and that these efforts were based on data collection and analysis, long before a full scientific theory of infection had been worked out. James Riley, in “Insects and the European Mortality Decline”, writes:3
In the later decades of the seventeenth and early decades of the eighteenth century, a number of internationally renowned physicians … formulated specific measures of intervention. Relying on Hippocratic tradition, specifically, on its suggestion that endemic and epidemic diseases are caused by forces in the environment, and influenced by Renaissance efforts at urban sanitation, these physicians proposed to discover the meteorological and topographical forces that might be blamed for the onset of epidemics. Toward this end, they and their followers embarked on a vast campaign to assemble qualitative and quantitative data about epidemics, climate and weather, geographical and topographical signs, and other features of the habitat. Their aim was to find conjunctures or correlations in the data, occasions when epidemics occurred after the same complex of environmental forces. Early signs of such a complex would offer warnings and allow the adoption of measures of prevention and avoidance. This body of medical theory failed to produce a coherent list of correlations, but it did provide a specific body of measures of avoidance and prevention.
In particular, they proposed (each bullet quoted from the article):
. to drain swamps, bogs, moats, and other sites of standing water
. to introduce hydraulic devices that would circulate water in canals and cisterns
. to flush refuse from areas of human habitation
. to ventilate living quarters and meeting places and to burn sulfur sticks or apply other insecticidal measures in houses, hospitals, prisons, meeting halls, and ships
. to inter corpses outside the city
. and by other measures, including refuse burial, to detach humankind from organic waste
These reforms were implemented starting in the 1740s, some by local and central governments, others by “humanitarians acting on private initiative”.
What broad changes were actually implemented, and is it plausible that they had a significant impact?
To have had a significant effect on insect numbers, the measures proposed by the environmentalists [the physicians advocating environmental cleanup] would have had to have been broadly applied across western Europe. Two measures, lavation and drainage, are particularly important in insect control, and we can focus on examples of their application. Lavation combines programs taking three forms: flushing filth from urban sites, collecting and disposing of refuse, and introducing devices to agitate or circulate standing water. By these means, which would cleanse streets, industrial sites, and buildings, and transform standing water in canals and cisterns into moving water, the environmentalists argued, the city might be made as healthy as the countryside. One model for these proposals was the naturally washed site of the town of Chester, England, where rain periodically flushed refuse into a subterranean drainage network cleansed by tidal action. The objective of the environmentalists was to introduce the same action by hydraulic engineering. Another model was the program followed in Hamburg to collect and dispose of refuse outside the city each day. A third was the improvement of streets by paving and widening, and of urban drainage networks by constructing or expanding sewage systems. Measures of one or another variety were adopted in many British cities and towns in the Improvement Acts of the 1760s and thereafter, and observers, such as William White in York, attributed declines in mortality specifically to them. In Paris, the drainage system was improved in 1740, and later in the century, other measures, including the emptying of cesspits and the installation of sewers, followed. In the Austrian Empire, Johann Peter Frank directed a broad campaign of medical policing, which included projects for refuse collection and disposal.
These efforts affected not only diseases such as malaria, where insects are the primary vector of infection, but also others such as dysentery in which insects (especially flies and cockroaches) can distribute the disease throughout the environment, e.g., from waste to food. Pest control thus provides the best explanation I’ve found for reductions in the mortality rate from the mid-1700s to early 1800s.
Cutler & Miller estimate10 that
the introduction of water filtration and chlorination systems led to major reductions in mortality, explaining nearly half of the overall reduction in mortality between 1900 and 1936. Our results also suggest that clean water was responsible for three-quarters of the decline in infant mortality and nearly two-thirds of the decline in child mortality. The magnitude of these effects is striking. Clean water also appears to have led to the near eradication of typhoid fever, a waterborne scourge of the 19th and early 20th Centuries.
Finally, the germ theory led to public health efforts to educate the populace on good general hygiene. A policy brief by Samuel Preston says:9
Enlightened public health officials were quick to recognize how the germ theory should guide their practice. Furthermore, by the time of the first White House Conference on Infant Mortality, held in 1909, they realized that rapid advances in longevity required that public officials go beyond their normal domain of public works and attempt to change the personal health practices of individuals. The germ theory provided a number of powerful weapons for doing so. These included boiling bottles and milk, washing hands, protecting food from flies, isolating sick children, and ventilating rooms. Public health officials launched massive campaigns to encourage these practices. In New York City, milk depots were established with the ostensible purpose of distributing milk to indigent mothers but with the real purpose, according to the director, of instructing mothers in hygienic practices. The New York City Department of Health produced one of the nation’s first motion pictures, entitled The Fly Pest. At the national level, the new Children’s Bureau adopted a primary focus on child health. Its pamphlet called Infant Care became the largest selling volume in the history of the Government Printing Office, with some 12 million copies sold by 1940. By the 1920s, the bureau was receiving and answering over 100,000 letters a year from parents seeking child care advice.
Thus the germ theory, long before it led to medical treatments, drove down mortality rates by revolutionizing sanitation and hygiene.
Tuesday, January 28, 2020
How many electric vehicles can the current Australian electricity grid support? Current grid can support EVs at 5–10% penetration under uncontrolled charging
How many electric vehicles can the current Australian electricity grid support?, Li and Lenzen, International Journal of Electrical Power & Energy Systems, Volume 117, May 2020. https://doi.org/10.1016/j.ijepes.2019.105586
Highlights
• Hourly spatio-temporal electricity dispatch is modelled to meet EV load in Australia.
• EV charging is spatially and temporally optimised using high-resolution GIS data.
• Current grid can support EVs at 5–10% penetration under uncontrolled charging.
• Controlled charging increases the ability to accommodate EVs to 60–70% penetration.
• Controlled charging reduces electricity cost by up to around 4–6%.
Abstract: We quantitatively investigate the impact of uncontrolled and controlled charging demand of battery electric vehicles (BEVs) on electricity generation, loss-of-load probability (LOLP), and levelized cost of electricity (LCOE) in Australia. We consider both high- and low-fuel-economy (HE and LE) BEVs, assume BEV penetration rates (EVPR) ranging from 0 to 100%, and three controlled charging participation rates (0%, 53% and 100%). The spatio-temporal distribution of BEV load is estimated by a GIS-based probabilistic model at a high-resolution level for Australia. The BEV charging impact is simulated by an hourly supply-demand model, respecting currently existing installed capacity, operating technologies and LOLP standards, to simulate an electricity dispatch for an entire year. BEV charging is spatially and temporally optimised to achieve minimum levelized cost. We show that the current Australian national grid can support HE and LE BEVs at 5–10% penetration for uncontrolled charging, and around 60–70% for controlled charging. Controlled charging also reduces electricity cost by up to around 4–6%.
Keywords: Vehicle grid integration, Electricity generation simulation, GIS, Controlled charging
Highlights
• Hourly spatio-temporal electricity dispatch is modelled to meet EV load in Australia.
• EV charging is spatially and temporally optimised using high-resolution GIS data.
• Current grid can support EVs at 5–10% penetration under uncontrolled charging.
• Controlled charging increases the ability to accommodate EVs to 60–70% penetration.
• Controlled charging reduces electricity cost by up to around 4–6%.
Abstract: We quantitatively investigate the impact of uncontrolled and controlled charging demand of battery electric vehicles (BEVs) on electricity generation, loss-of-load probability (LOLP), and levelized cost of electricity (LCOE) in Australia. We consider both high- and low-fuel-economy (HE and LE) BEVs, assume BEV penetration rates (EVPR) ranging from 0 to 100%, and three controlled charging participation rates (0%, 53% and 100%). The spatio-temporal distribution of BEV load is estimated by a GIS-based probabilistic model at a high-resolution level for Australia. The BEV charging impact is simulated by an hourly supply-demand model, respecting currently existing installed capacity, operating technologies and LOLP standards, to simulate an electricity dispatch for an entire year. BEV charging is spatially and temporally optimised to achieve minimum levelized cost. We show that the current Australian national grid can support HE and LE BEVs at 5–10% penetration for uncontrolled charging, and around 60–70% for controlled charging. Controlled charging also reduces electricity cost by up to around 4–6%.
Keywords: Vehicle grid integration, Electricity generation simulation, GIS, Controlled charging
Immersive virtual reality: Het. men rated the female avatar’s touch as more appropriate & erogenous, while het. women rated female & male touches as equally appropriate (the latter being most erogenous)
Fusaro, Martina, Matteo Lisi, Gaetano Tieri, and Salvatore M. Aglioti. 2020. “Touched by Vision: How Heterosexual, Gay, and Lesbian People React to the View of Their Avatar Being Caressed on Taboo Body Parts.” PsyArXiv. January 28. doi:10.31234/osf.io/dkzj5
Abstract: Embodying an artificial agent through immersive virtual reality (IVR) may lead to feeling somatosensory stimuli on one’s body which are in fact never delivered. What remains unknown is whether the vicarious touch in virtual reality reflects the basic individual and social features of real-life interpersonal interactions. Here, we explored the subjective and objective reactivity of heterosexual men/women (Study 1) and of gay men/lesbian women (Study 2) to the observation of a gender-matched virtual body being touched on different body parts, including the breast and genitalia, by male and female avatars. In addition to the illusory feeling of being touched and of owning the virtual body, participants reported on different aspects of the experience (e.g., appropriateness, erogeneity). Physiological measures of autonomic reactivity were also collected. Heterosexual men rated the female avatar’s touch as more appropriate and erogenous, while heterosexual women rated female and male avatar touches as equally appropriate, with the latter being most erogenous. Interestingly, gay men exhibited the same pattern of appropriateness and erogeneity as heterosexual women. In contrast, lesbian women rated more appropriate and erogenous the touches of the female avatar. For all participants, the most appropriate and erogenous regions were the social and the intimate ones, respectively. Importantly, touches on the virtual body’s intimate areas elicited the highest skin conductance response when participants were touched by a female avatar. Thus, IVR may easily induce vicarious experiences and ultimately allow the direct exploration of sensitive societal and individual issues that can otherwise be explored only through imagination.
Abstract: Embodying an artificial agent through immersive virtual reality (IVR) may lead to feeling somatosensory stimuli on one’s body which are in fact never delivered. What remains unknown is whether the vicarious touch in virtual reality reflects the basic individual and social features of real-life interpersonal interactions. Here, we explored the subjective and objective reactivity of heterosexual men/women (Study 1) and of gay men/lesbian women (Study 2) to the observation of a gender-matched virtual body being touched on different body parts, including the breast and genitalia, by male and female avatars. In addition to the illusory feeling of being touched and of owning the virtual body, participants reported on different aspects of the experience (e.g., appropriateness, erogeneity). Physiological measures of autonomic reactivity were also collected. Heterosexual men rated the female avatar’s touch as more appropriate and erogenous, while heterosexual women rated female and male avatar touches as equally appropriate, with the latter being most erogenous. Interestingly, gay men exhibited the same pattern of appropriateness and erogeneity as heterosexual women. In contrast, lesbian women rated more appropriate and erogenous the touches of the female avatar. For all participants, the most appropriate and erogenous regions were the social and the intimate ones, respectively. Importantly, touches on the virtual body’s intimate areas elicited the highest skin conductance response when participants were touched by a female avatar. Thus, IVR may easily induce vicarious experiences and ultimately allow the direct exploration of sensitive societal and individual issues that can otherwise be explored only through imagination.
From 2018... The First Ejaculation: A Male Pubertal Milestone Comparable to Menarche?
From 2018... The First Ejaculation: A Male Pubertal Milestone Comparable to Menarche? Jordan A. Chad. The Journal of Sex Research, Volume 57, 2020 - Issue 2, Pages 213-221, Nov 30 2018. https://doi.org/10.1080/00224499.2018.1543643
Abstract: Boys experience their first ejaculation (thorarche) during adolescence, but this event is often overlooked as a milestone in male adolescent development. The purpose of this article is to draw attention to thorarche and consider it in comparison with the female milestone of menarche. A critical analysis is provided of how thorarche has been interpreted to date and the complexities in construing thorarche from a biological perspective are outlined. Despite potential tenability of characterizing thorarche as a comparable milestone to menarche, two particular points challenge this notion: (a) While thorarche may befall the boy involuntarily, it may also be induced by the boy’s own will; and (b) Thorarche occurs concomitantly with (pubertal) orgasmarche and has an innate connection with sexuality. The answer to the title question remains contentious, but open topics for future research are noted throughout the article as essential steps towards attaining a better understanding of thorarche.
Abstract: Boys experience their first ejaculation (thorarche) during adolescence, but this event is often overlooked as a milestone in male adolescent development. The purpose of this article is to draw attention to thorarche and consider it in comparison with the female milestone of menarche. A critical analysis is provided of how thorarche has been interpreted to date and the complexities in construing thorarche from a biological perspective are outlined. Despite potential tenability of characterizing thorarche as a comparable milestone to menarche, two particular points challenge this notion: (a) While thorarche may befall the boy involuntarily, it may also be induced by the boy’s own will; and (b) Thorarche occurs concomitantly with (pubertal) orgasmarche and has an innate connection with sexuality. The answer to the title question remains contentious, but open topics for future research are noted throughout the article as essential steps towards attaining a better understanding of thorarche.
Hormonal contraceptive use and subjective sleep reports in women: An online survey
Hormonal contraceptive use and subjective sleep reports in women: An online survey. Andréia Gomes Bezerra Monica Levy Andersen Gabriel Natan Pires Carolina V. Banzoli Daniel Ninelo Polesel Sergio Tufik Helena Hachul. Journal of Sleep Research, January 27 2020 https://doi.org/10.1111/jsr.12983
Abstract: Female sexual hormones have known hypnogenic effects and the use of hormonal replacement therapy in postmenopausal women leads to improvement in sleep quality. However, the effects of hormonal contraceptives in women of reproductive age are still scarcely understood. This study sought to evaluate the impact of hormonal contraceptive use on subjective self‐reports of sleep through a web‐based cross‐sectional survey. A total of 2,055 women between 18 and 40 years old participated by answering an online questionnaire evaluating hormonal contraceptive use, sleep‐related characteristics and related features. Sleep assessment tools comprised the Epworth Sleepiness Scale (ESS) and the Insomnia Severity Index (ISI). Statistical comparisons were performed between hormonal contraceptive users and those who reported no current use. Analyses were repeated to compare users of combined contraceptives with users of progestagens only, as well as to compare users of different generations of contraceptives. Among the total sample, 1,286 participants met the inclusion criteria (918 of them were currently taking a hormonal contraceptive). Contraceptive users reported more frequent sleep complaints and had higher scores on ESS and ISI, which means increased excessive daytime sleepiness and more insomnia symptoms. Women using progestagen‐only therapies reported lower total sleep duration compared with combined therapy. Users of third‐generation contraceptives showed lower total sleep time and higher ISI score when compared with non‐users. In conclusion, contraceptive users have more insomnia symptoms and increased excessive daytime sleepiness when compared with women who do not use any hormonal contraceptive method, and progestagen‐only therapy was associated with lower sleep duration.
Abstract: Female sexual hormones have known hypnogenic effects and the use of hormonal replacement therapy in postmenopausal women leads to improvement in sleep quality. However, the effects of hormonal contraceptives in women of reproductive age are still scarcely understood. This study sought to evaluate the impact of hormonal contraceptive use on subjective self‐reports of sleep through a web‐based cross‐sectional survey. A total of 2,055 women between 18 and 40 years old participated by answering an online questionnaire evaluating hormonal contraceptive use, sleep‐related characteristics and related features. Sleep assessment tools comprised the Epworth Sleepiness Scale (ESS) and the Insomnia Severity Index (ISI). Statistical comparisons were performed between hormonal contraceptive users and those who reported no current use. Analyses were repeated to compare users of combined contraceptives with users of progestagens only, as well as to compare users of different generations of contraceptives. Among the total sample, 1,286 participants met the inclusion criteria (918 of them were currently taking a hormonal contraceptive). Contraceptive users reported more frequent sleep complaints and had higher scores on ESS and ISI, which means increased excessive daytime sleepiness and more insomnia symptoms. Women using progestagen‐only therapies reported lower total sleep duration compared with combined therapy. Users of third‐generation contraceptives showed lower total sleep time and higher ISI score when compared with non‐users. In conclusion, contraceptive users have more insomnia symptoms and increased excessive daytime sleepiness when compared with women who do not use any hormonal contraceptive method, and progestagen‐only therapy was associated with lower sleep duration.
Individual & Joint Pornography Use Among Romantic Couples: Partner knowledge of use had little direct association with well-being, but unknown individual use may be associated with less sexual, but more relationship, satisfaction
Behind Closed Doors: Individual and Joint Pornography Use Among Romantic Couples. Brian J. Willoughby & Nathan D. Leonhardt. The Journal of Sex Research, Volume 57, 2020 - Issue 1, Pages 77-91. https://doi.org/10.1080/00224499.2018.1541440
Abstract: Most previous research on the associations between pornography use and relational well-being has utilized individual data sets that have limited scholars’ ability to truly understand the dyadic nature of pornography use within romantic couples. Using a dyadic data set of 240 committed heterosexual couples from the United States, we explored actor and partner associations between pornography use, sexual dynamics, and relational well-being. We also explored how couple pornography use and partner knowledge of pornography use were associated with well-being. Results suggested that female pornography use was associated with higher female sexual desire but no other dependent variables. Male pornography use was associated with a wide array of negative well-being indicators, including less male and female relationship satisfaction, lower female sexual desire, and lower male positive communication. Couple pornography use was associated with higher reported sexual satisfaction for both partners but no other well-being indicators. Partner knowledge of use had little direct association with well-being, but some evidence suggested that unknown individual use may be associated with less sexual satisfaction but more relationship satisfaction. Results suggest that different configurations of use among heterosexual couples are associated with varying relational well-being indicators.
Abstract: Most previous research on the associations between pornography use and relational well-being has utilized individual data sets that have limited scholars’ ability to truly understand the dyadic nature of pornography use within romantic couples. Using a dyadic data set of 240 committed heterosexual couples from the United States, we explored actor and partner associations between pornography use, sexual dynamics, and relational well-being. We also explored how couple pornography use and partner knowledge of pornography use were associated with well-being. Results suggested that female pornography use was associated with higher female sexual desire but no other dependent variables. Male pornography use was associated with a wide array of negative well-being indicators, including less male and female relationship satisfaction, lower female sexual desire, and lower male positive communication. Couple pornography use was associated with higher reported sexual satisfaction for both partners but no other well-being indicators. Partner knowledge of use had little direct association with well-being, but some evidence suggested that unknown individual use may be associated with less sexual satisfaction but more relationship satisfaction. Results suggest that different configurations of use among heterosexual couples are associated with varying relational well-being indicators.
Norway: The higher risk of childlessness was associated with the highest intelligence score, & and this effect was mediated by whether participants had ever been in a relationship by their late twenties
Does Intelligence Predict Childlessness in Men? An Analysis of the Direct and Indirect Associations Between Intelligence and Childlessness in Men. Audun Hustad Torgersen. Oslo University, Oct 15 3019. https://www.duo.uio.no/bitstream/handle/10852/72403/1/Does-Intelligence-Predict-Childlessness-In-Men.pdf
Background: In many European countries, the rate of childlessness has increased and this increase is disproportionately large among men. It is thus important to study the antecedents of childlessness. Intelligence as a predictor of childlessness has received some attention, although the findings are conflicted. Men with less education, lower wages and no partner seem to be overrepresented among the childless. These factors are known to be associated with intelligence. However, little is known about how these factors may mediate the association between intelligence and childlessness.
Method: The present study analyzed data from the Young in Norway survey, which had been linked to the Historical Event Database (FD-Trygd) of Statistics Norway, in addition to intelligence scores from the evaluation for mandatory military service for all men in Norway. Intelligence scores were used as predictors of childlessness. Information on education, income and relationship history was retrieved from both the Young in Norway survey and the FD-trygd register. Mediation analyses with logistic regression analysis were performed in order to examine the direct and indirect effect of intelligence on childlessness.
Results: No linear association between intelligence and childlessness was found. However, follow-up analyses showed that higher risk of childlessness was associated with the highest stanine intelligence score (two standard deviations above the normed average), and that this effect was mediated by whether participants had ever been in a relationship by their late twenties. No significant direct effect of the highest stanine intelligence score was found when the question of whether participants had ever been in a relationship by their late twenties was included.
Conclusion: The present study revealed a complex association between intelligence and childlessness. The mediated association between the highest stanine intelligence score and childlessness was interpreted as an expression of delayed family formation. It is still unclear whether this delay in family formation will “catch up” if childlessness is measured at an older age, which raises the need for additional studies on the subject.
Background: In many European countries, the rate of childlessness has increased and this increase is disproportionately large among men. It is thus important to study the antecedents of childlessness. Intelligence as a predictor of childlessness has received some attention, although the findings are conflicted. Men with less education, lower wages and no partner seem to be overrepresented among the childless. These factors are known to be associated with intelligence. However, little is known about how these factors may mediate the association between intelligence and childlessness.
Method: The present study analyzed data from the Young in Norway survey, which had been linked to the Historical Event Database (FD-Trygd) of Statistics Norway, in addition to intelligence scores from the evaluation for mandatory military service for all men in Norway. Intelligence scores were used as predictors of childlessness. Information on education, income and relationship history was retrieved from both the Young in Norway survey and the FD-trygd register. Mediation analyses with logistic regression analysis were performed in order to examine the direct and indirect effect of intelligence on childlessness.
Results: No linear association between intelligence and childlessness was found. However, follow-up analyses showed that higher risk of childlessness was associated with the highest stanine intelligence score (two standard deviations above the normed average), and that this effect was mediated by whether participants had ever been in a relationship by their late twenties. No significant direct effect of the highest stanine intelligence score was found when the question of whether participants had ever been in a relationship by their late twenties was included.
Conclusion: The present study revealed a complex association between intelligence and childlessness. The mediated association between the highest stanine intelligence score and childlessness was interpreted as an expression of delayed family formation. It is still unclear whether this delay in family formation will “catch up” if childlessness is measured at an older age, which raises the need for additional studies on the subject.
Widespread Gray Matter Gain 4-6 Weeks After Giving Birth: A restoration of brain tissue or a substantial brain reorganization, possibly to accommodate a multi-faceted repertoire of complex behaviors associated to being a mother
From Baby Brain to Mommy Brain: Widespread Gray Matter Gain After Giving Birth. Eileen Luders et al. Cortex, January 28 2020. https://doi.org/10.1016/j.cortex.2019.12.029
Abstract: Pregnancy results in obvious physiological changes to the female body, but data as to what happens to the maternal brain after giving birth are sparse as well as inconsistent. The overall goal of this study is to determine the nature of cerebral change in the postpartum period. For this purpose, we analyzed T1-weighted brain images of 14 healthy women (age range: 25 – 38 years) at two time points, specifically within 1-2 days of childbirth (immediate postpartum) and at 4-6 weeks after childbirth (late postpartum). When comparing voxel-wise gray matter between these two time points, there was no evidence of any significant decrease. Instead, we detected a pronounced gray matter increase involving both cortical and subcortical regions, such as the pre- and postcentral gyrus, the frontal and central operculum, the inferior frontal gyrus, the precuneus, and the middle occipital gyrus, as well as the thalamus and caudate. These structural changes occurring within only 4-6 weeks after delivery are reflective of a high degree of neuroplasticity and massive adaptations in the maternal brain. They may suggest a restoration of brain tissue following pregnancy and/or a substantial brain reorganization, possibly to accommodate a multi-faceted repertoire of complex behaviors associated with being a mother.
Abstract: Pregnancy results in obvious physiological changes to the female body, but data as to what happens to the maternal brain after giving birth are sparse as well as inconsistent. The overall goal of this study is to determine the nature of cerebral change in the postpartum period. For this purpose, we analyzed T1-weighted brain images of 14 healthy women (age range: 25 – 38 years) at two time points, specifically within 1-2 days of childbirth (immediate postpartum) and at 4-6 weeks after childbirth (late postpartum). When comparing voxel-wise gray matter between these two time points, there was no evidence of any significant decrease. Instead, we detected a pronounced gray matter increase involving both cortical and subcortical regions, such as the pre- and postcentral gyrus, the frontal and central operculum, the inferior frontal gyrus, the precuneus, and the middle occipital gyrus, as well as the thalamus and caudate. These structural changes occurring within only 4-6 weeks after delivery are reflective of a high degree of neuroplasticity and massive adaptations in the maternal brain. They may suggest a restoration of brain tissue following pregnancy and/or a substantial brain reorganization, possibly to accommodate a multi-faceted repertoire of complex behaviors associated with being a mother.
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