Wednesday, June 27, 2018

Most taxa lack well-developed sexual weaponry; females of only a few species possess better weapons than males; & animals possessing the most developed weapons have non‐hunting habits or are faunivores that prey on very small prey relative to their body size

Intrasexually selected weapons. Alejandro Rico‐Guevara, Kristiina J. Hurme. Biological Reviews, https://doi.org/10.1111/brv.12436

ABSTRACT: We propose a practical concept that distinguishes the particular kind of weaponry that has evolved to be used in combat between individuals of the same species and sex, which we term intrasexually selected weapons (ISWs). We present a treatise of ISWs in nature, aiming to understand their distinction and evolution from other secondary sex traits, including from ‘sexually selected weapons’, and from sexually dimorphic and monomorphic weaponry. We focus on the subset of secondary sex traits that are the result of same‐sex combat, defined here as ISWs, provide not previously reported evolutionary patterns, and offer hypotheses to answer questions such as: why have only some species evolved weapons to fight for the opposite sex or breeding resources? We examined traits that seem to have evolved as ISWs in the entire animal phylogeny, restricting the classification of ISW to traits that are only present or enlarged in adults of one of the sexes, and are used as weapons during intrasexual fights. Because of the absence of behavioural data and, in many cases, lack of sexually discriminated series from juveniles to adults, we exclude the fossil record from this review. We merge morphological, ontogenetic, and behavioural information, and for the first time thoroughly review the tree of life to identify separate evolution of ISWs. We found that ISWs are only found in bilateral animals, appearing independently in nematodes, various groups of arthropods, and vertebrates. Our review sets a reference point to explore other taxa that we identify with potential ISWs for which behavioural or morphological studies are warranted. We establish that most ISWs come in pairs, are located in or near the head, are endo‐ or exoskeletal modifications, are overdeveloped structures compared with those found in females, are modified feeding structures and/or locomotor appendages, are most common in terrestrial taxa, are frequently used to guard females, territories, or both, and are also used in signalling displays to deter rivals and/or attract females. We also found that most taxa lack ISWs, that females of only a few species possess better‐developed weapons than males, that the cases of independent evolution of ISWs are not evenly distributed across the phylogeny, and that animals possessing the most developed ISWs have non‐hunting habits (e.g. herbivores) or are faunivores that prey on very small prey relative to their body size (e.g. insectivores). Bringing together perspectives from studies on a variety of taxa, we conceptualize that there are five ways in which a sexually dimorphic trait, apart from the primary sex traits, can be fixed: sexual selection, fecundity selection, parental role division, differential niche occupation between the sexes, and interference competition. We discuss these trends and the factors involved in the evolution of intrasexually selected weaponry in nature.

Moral character of similar persons (in social beliefs) was perceived as much higher than that of dissimilar ones (effect was large); similar persons were perceived as more trustworthy than dissimilar ones (also large effect)

The mere liking effect: Attitudinal influences on attributions of moral character. Konrad Bocian et al. Journal of Experimental Social Psychology, Volume 79, November 2018, Pages 9–20. https://doi.org/10.1016/j.jesp.2018.06.007

Highlights
•    The article bridges two classic areas of psychology: moral judgments and attitudes.
•    Attitudes strongly influence judgments of moral character.
•    These influences are entirely mediated by changes in liking of the judged persons.
•    Changes in mood do not play such a role.
•    Attitudinal influences might lay at the core of moral character perceptions.

Abstract: People believe that their moral judgments are well-justified and as objective as scientific facts. Still, dual-process models of judgment provide strong theoretical reasons to expect that in reality moral judgments are substantially influenced by highly subjective factors such as attitudes. In four experiments (N = 645) we provide evidence that similarity-dissimilarity of beliefs, mere exposure, and facial mimicry influence judgments of moral character measured in various ways. These influences are mediated by changes in liking of the judged persons, suggesting that attitudinal influences lay at the core of moral character perceptions. Changes in mood do not play such a role. This is the first line of studies showing that attitudes influence moral judgments in addition to frequently studied discrete emotions. It is also the first research evidencing the affective influences on judgments of moral character.

Keywords: Moral judgments; Moral character; Attitudes; Attribution

h/t: Rolf Degen https://twitter.com/DegenRolf

The Myth of the Liberal Order, by Graham Allison

The Myth of the Liberal Order: From Historical Accident to Conventional Wisdom. Graham Allison. Foreign Affairs, July/August 2018. https://www.foreignaffairs.com/articles/2018-06-14/myth-liberal-order

Among the debates that have swept the U.S. foreign policy community since the beginning of the Trump administration, alarm about the fate of the liberal international rules-based order has emerged as one of the few fixed points. From the international relations scholar G. John Ikenberry’s claim that “for seven decades the world has been dominated by a western liberal order” to U.S. Vice President Joe Biden’s call in the final days of the Obama administration to “act urgently to defend the liberal international order,” this banner waves atop most discussions of the United States’ role in the world.

About this order, the reigning consensus makes three core claims. First, that the liberal order has been the principal cause of the so-called long peace among great powers for the past seven decades. Second, that constructing this order has been the main driver of U.S. engagement in the world over that period. And third, that U.S. President Donald Trump is the primary threat to the liberal order—and thus to world peace. The political scientist Joseph Nye, for example, has written, “The demonstrable success of the order in helping secure and stabilize the world over the past seven decades has led to a strong consensus that defending, deepening, and extending this system has been and continues to be the central task of U.S. foreign policy.” Nye has gone so far as to assert: “I am not worried by the rise of China. I am more worried by the rise of Trump.”

Although all these propositions contain some truth, each is more wrong than right. The “long peace” was the not the result of a liberal order but the byproduct of the dangerous balance of power between the Soviet Union and the United States during the four and a half decades of the Cold War and then of a brief period of U.S. dominance. U.S. engagement in the world has been driven not by the desire to advance liberalism abroad or to build an international order but by the need to do what was necessary to preserve liberal democracy at home. And although Trump is undermining key elements of the current order, he is far from the biggest threat to global stability.

These misconceptions about the liberal order’s causes and consequences lead its advocates to call for the United States to strengthen the order by clinging to pillars from the past and rolling back authoritarianism around the globe. Yet rather than seek to return to an imagined past in which the United States molded the world in its image, Washington should limit its efforts to ensuring sufficient order abroad to allow it to concentrate on reconstructing a viable liberal democracy at home.

CONCEPTUAL JELL-O

The ambiguity of each of the terms in the phrase “liberal international rules-based order” creates a slipperiness that allows the concept to be applied to almost any situation. When, in 2017, members of the World Economic Forum in Davos crowned Chinese President Xi Jinping the leader of the liberal economic order—even though he heads the most protectionist, mercantilist, and predatory major economy in the world—they revealed that, at least in this context, the word “liberal” has come unhinged.

What is more, “rules-based order” is redundant. Order is a condition created by rules and regularity. What proponents of the liberal international rules-based order really mean is an order that embodies good rules, ones that are equal or fair. The United States is said to have designed an order that others willingly embrace and sustain.

Many forget, however, that even the UN Charter, which prohibits nations from using military force against other nations or intervening in their internal affairs, privileges the strong over the weak. Enforcement of the charter’s prohibitions is the preserve of the UN Security Council, on which each of the five great powers has a permanent seat—and a veto. As the Indian strategist C. Raja Mohan has observed, superpowers are “exceptional”; that is, when they decide it suits their purpose, they make exceptions for themselves. The fact that in the first 17 years of this century, the self-proclaimed leader of the liberal order invaded two countries, conducted air strikes and Special Forces raids to kill hundreds of people it unilaterally deemed to be terrorists, and subjected scores of others to “extraordinary rendition,” often without any international legal authority (and sometimes without even national legal authority), speaks for itself.

COLD WAR ORDER

The claim that the liberal order produced the last seven decades of peace overlooks a major fact: the first four of those decades were defined not by a liberal order but by a cold war between two polar opposites. As the historian who named this “long peace” has explained, the international system that prevented great-power war during that time was the unintended consequence of the struggle between the Soviet Union and the United States. In John Lewis Gaddis’ words, “Without anyone’s having designed it, and without any attempt whatever to consider the requirements of justice, the nations of the postwar era lucked into a system of international relations that, because it has been based upon realities of power, has served the cause of order—if not justice—better than one might have expected.”

During the Cold War, both superpowers enlisted allies and clients around the globe, creating what came to be known as a bipolar world. Within each alliance or bloc, order was enforced by the superpower (as Hungarians and Czechs discovered when they tried to defect in 1956 and 1968, respectively, and as the British and French learned when they defied U.S. wishes in 1956, during the Suez crisis). Order emerged from a balance of power, which allowed the two superpowers to develop the constraints that preserved what U.S. President John F. Kennedy called, in the aftermath of the Cuban missile crisis of 1962, the “precarious status quo.”

What moved a country that had for almost two centuries assiduously avoided entangling military alliances, refused to maintain a large standing military during peacetime, left international economics to others, and rejected the League of Nations to use its soldiers, diplomats, and money to reshape half the world? In a word, fear. The strategists revered by modern U.S. scholars as “the wise men” believed that the Soviet Union posed a greater threat to the United States than Nazism had. As the diplomat George Kennan wrote in his legendary “Long Telegram,” the Soviet Union was “a political force committed fanatically to the belief that with US there can be no permanent modus vivendi.” Soviet Communists, Kennan wrote, believed it was necessary that “our society be disrupted, our traditional way of life be destroyed, the international authority of our state be broken, if Soviet power [was] to be secure.”

Before the nuclear age, such a threat would have required a hot war as intense as the one the United States and its allies had just fought against Nazi Germany. But after the Soviet Union tested its first atomic bomb, in 1949, American statesmen began wrestling with the thought that total war as they had known it was becoming obsolete. In the greatest leap of strategic imagination in the history of U.S. foreign policy, they developed a strategy for a form of combat never previously seen, the conduct of war by every means short of physical conflict between the principal combatants.

To prevent a cold conflict from turning hot, they accepted—for the time being—many otherwise unacceptable facts, such as the Soviet domination of Eastern Europe. They modulated their competition with mutual constraints that included three noes: no use of nuclear weapons, no overt killing of each other’s soldiers, and no military intervention in the other’s recognized sphere of influence.

American strategists incorporated Western Europe and Japan into this war effort because they saw them as centers of economic and strategic gravity. To this end, the United States launched the Marshall Plan to rebuild Western Europe, founded the International Monetary Fund and the World Bank, and negotiated the General Agreement on Tariffs and Trade to promote global prosperity. And to ensure that Western Europe and Japan remained in active cooperation with the United States, it established NATO and the U.S.-Japanese alliance.

Each initiative served as a building block in an order designed first and foremost to defeat the Soviet adversary. Had there been no Soviet threat, there would have been no Marshall Plan and no NATO. The United States has never promoted liberalism abroad when it believed that doing so would pose a significant threat to its vital interests at home. Nor has it ever refrained from using military force to protect its interests when the use of force violated international rules. Had there been no Soviet threat, there would have been no Marshall Plan and no Nato.

Nonetheless, when the United States has had the opportunity to advance freedom for others—again, with the important caveat that doing so would involve little risk to itself—it has acted. From the founding of the republic, the nation has embraced radical, universalistic ideals. In proclaiming that “all” people “are created equal,” the Declaration of Independence did not mean just those living in the 13 colonies.

It was no accident that in reconstructing its defeated adversaries  Germany and Japan and shoring up its allies in Western Europe, the United States sought to build liberal democracies that would embrace shared values as well as shared interests. The ideological campaign against the Soviet Union hammered home fundamental, if exaggerated, differences between “the free world” and “the evil empire.” Moreover, American policymakers knew that in mobilizing and sustaining support in Congress and among the public, appeals to values are as persuasive as arguments about interests.

In his memoir, Present at the Creation, former U.S. Secretary of State Dean Acheson, an architect of the postwar effort, explained the thinking that motivated U.S. foreign policy. The prospect of Europe falling under Soviet control through a series of “‘settlements by default’ to Soviet pressure” required the “creation of strength throughout the free world” that would “show the Soviet leaders by successful containment that they could not hope to expand their influence throughout the world.” Persuading Congress and the American public to support this undertaking, Acheson acknowledged, sometimes required making the case “clearer than truth.”

UNIPOLAR ORDER

In the aftermath of the disintegration of the Soviet Union and Russian President Boris Yeltsin’s campaign to “bury communism,”Americans were understandably caught up in a surge of triumphalism. The adversary on which they had focused for over 40 years stood by as the Berlin Wall came tumbling down and Germany reunified. It then joined with the United States in a unanimous UN Security Council resolution authorizing the use of force to throw the Iraqi military out of Kuwait. As the iron fist of Soviet oppression withdrew, free people in Eastern Europe embraced market economies and democracy. U.S. President George H. W. Bush declared a “new world order.” Hereafter, under a banner of “engage and enlarge,” the United States would welcome a world clamoring to join a growing liberal order.

Writing about the power of ideas, the economist John Maynard Keynes noted, “Madmen in authority, who hear voices in the air, are distilling their frenzy from some academic scribbler of a few years back.” In this case, American politicians were following a script offered by the political scientist Francis Fukuyama in his best-selling 1992 book, The End of History and the Last Man. Fukuyama argued that millennia of conflict among ideologies were over. From this point on, all nations would embrace free-market economics to make their citizens rich and democratic governments to make them free. “What we may be witnessing,” he wrote, “is not just the end of the Cold War, or the passing of a particular period of postwar history, but the end of history as such: that is, the end point of mankind’s ideological evolution and the universalization of Western liberal democracy as the final form of human government.” In 1996, the New York Times columnist Thomas Friedman went even further by proclaiming the “Golden Arches Theory of Conflict Prevention”: “When a country reaches a certain level of economic development, when it has a middle class big enough to support a McDonald’s, it becomes a McDonald’s country, and people in McDonald’s countries don’t like to fight wars; they like to wait in line for burgers.”

This vision led to an odd coupling of neoconservative crusaders on the right and liberal interventionists on the left. Together, they persuaded a succession of U.S. presidents to try to advance the spread of capitalism and liberal democracy through the barrel of a gun. In 1999, Bill Clinton bombed Belgrade to force it to free Kosovo. In 2003, George W. Bush invaded Iraq to topple its president, Saddam Hussein. When his stated rationale for the invasion collapsed after U.S. forces were unable to find weapons of mass destruction, Bush declared a new mission: “to build a lasting democracy that is peaceful and prosperous.” In the words of Condoleezza Rice, his national security adviser at the time, “Iraq and Afghanistan are vanguards of this effort to spread democracy and tolerance and freedom throughout the Greater Middle East.” And in 2011, Barack Obama embraced the Arab Spring’s promise to bring democracy to the nations of the Middle East and sought to advance it by bombing Libya and deposing its brutal leader, Muammar al-Qaddafi. Few in Washington paused to note that in each case, the unipolar power was using military force to impose liberalism on countries whose governments could not strike back. Since the world had entered a new chapter of history, lessons from the past about the likely consequences of such behavior were ignored. The end of the Cold War produced a unipolar moment, not a unipolar era.

As is now clear, the end of the Cold War produced a unipolar moment, not a unipolar era. Today, foreign policy elites have woken up to the meteoric rise of an authoritarian China, which now rivals or even surpasses the United States in many domains, and the resurgence of an assertive, illiberal Russian nuclear superpower, which is willing to use its military to change both borders in Europe and the balance of power in the Middle East. More slowly and more painfully, they are discovering that the United States’ share of global power has shrunk. When measured by the yardstick of purchasing power parity, the U.S. economy, which accounted for half of the world’s GDP after World War II, had fallen to less than a quarter of global GDP by the end of the Cold War and stands at just one-seventh today. For a nation whose core strategy has been to overwhelm challenges with resources, this decline calls into question the terms of U.S. leadership.

This rude awakening to the return of history jumps out in the Trump administration’s National Security Strategy and National Defense Strategy, released at the end of last year and the beginning of this year, respectively. The NDS notes that in the unipolar decades, “the United States has enjoyed uncontested or dominant superiority in every operating domain.” As a consequence, “we could generally deploy our forces when we wanted, assemble them where we wanted, and operate how we wanted.” But today, as the NSS observes, China and Russia “are fielding military capabilities designed to deny America access in times of crisis and to contest our ability to operate freely.” Revisionist powers, it concludes, are “trying to change the international order in their favor.”

THE AMERICAN EXPERIMENT

During most of the nation’s 242 years, Americans have recognized the necessity to give priority to ensuring freedom at home over advancing aspirations abroad. The Founding Fathers were acutely aware that constructing a government in which free citizens would govern themselves was an uncertain, hazardous undertaking.

Among the hardest questions they confronted was how to create a government powerful enough to ensure Americans’ rights at home and protect them from enemies abroad without making it so powerful that it would abuse its strength.

Their solution, as the presidential scholar Richard Neustadt wrote, was not just a “separation of powers” among the executive, legislative, and judicial branches but “separated institutions sharing power.” The Constitution was an “invitation to struggle.” And presidents, members of Congress, judges, and even journalists have been struggling ever since. The process was not meant to be pretty. As Supreme Court Justice Louis Brandeis explained to those frustrated by the delays, gridlock, and even idiocy these checks and balances sometimes produce, the founders’ purpose was “not to promote efficiency but to preclude the exercise of arbitrary power.”

From this beginning, the American experiment in self-government has always been ...

To overcome the feeling of eeriness of own-voice recordings, some have suggested equalization of the recorded voice with various types of filters; but there is no general filter that can represent own voice for everyone, and the uncanny valley does not exist for own voice, specifically

Auditory traits of "own voice". Marino Kimura, Yuko Yotsumoto. PLOS June 26, 2018. https://doi.org/10.1371/journal.pone.0199443

Abstract: People perceive their recorded voice differently from their actively spoken voice. The uncanny valley theory proposes that as an object approaches humanlike characteristics, there is an increase in the sense of familiarity; however, eventually a point is reached where the object becomes strangely similar and makes us feel uneasy. The feeling of discomfort experienced when people hear their recorded voice may correspond to the floor of the proposed uncanny valley. To overcome the feeling of eeriness of own-voice recordings, previous studies have suggested equalization of the recorded voice with various types of filters, such as step, bandpass, and low-pass, yet the effectiveness of these filters has not been evaluated. To address this, the aim of experiment 1 was to identify what type of voice recording was the most representative of one’s own voice. The voice recordings were presented in five different conditions: unadjusted recorded voice, step filtered voice, bandpass filtered voice, low-pass filtered voice, and a voice for which the participants freely adjusted the parameters. We found large individual differences in the most representative own-voice filter. In order to consider roles of sense of agency, experiment 2 investigated if lip-synching would influence the rating of own voice. The result suggested lip-synching did not affect own voice ratings. In experiment 3, based on the assumption that the voices used in previous experiments corresponded to continuous representations of non-own voice to own voice, the existence of an uncanny valley was examined. Familiarity, eeriness, and the sense of own voice were rated. The result did not support the existence of an uncanny valley. Taken together, the experiments led us to the following conclusions: there is no general filter that can represent own voice for everyone, sense of agency has no effect on own voice rating, and the uncanny valley does not exist for own voice, specifically.

Tuesday, June 26, 2018

Parents were more likely than their daughters to choose an unattractive, but wealthy mate for the daughters, but they also tended to shy away from a wealthy plus attractive mate

Parent–offspring conflict over mate choice: An experimental study in China. Jeanne Bovet et al. British Journal of Psychology, https://doi.org/10.1111/bjop.12319

Abstract: Both parents and offspring have evolved mating preferences that enable them to select mates and children‐in‐law to maximize their inclusive fitness. The theory of parent–offspring conflict predicts that preferences for potential mates may differ between parents and offspring: individuals are expected to value biological quality more in their own mates than in their offspring's mates and to value investment potential more in their offspring's mates than in their own mates. We tested this hypothesis in China using a naturalistic ‘marriage market’ where parents actively search for marital partners for their offspring. Parents gather at a public park to advertise the characteristics of their adult children, looking for a potential son or daughter‐in‐law. We presented 589 parents and young adults from the city of Kunming (Yunnan, China) with hypothetical mating candidates varying in their levels of income (proxy for investment potential) and physical attractiveness (proxy for biological quality). We found some evidence of a parent–offspring conflict over mate choice, but only in the case of daughters, who evaluated physical attractiveness as more important than parents. We also found an effect of the mating candidate's sex, as physical attractiveness was deemed more valuable in a female potential mate by parents and offspring alike.

Rolf Degen summarizing (https://twitter.com/DegenRolf/status/1011602601840906240): Parents were more likely than their daughters to choose an unattractive, but wealthy mate for the daughters, but they also tended to shy away from a wealthy plus attractive mate

Self-perceived effects of pornography consumption among heterosexual men

Miller, D. J., Hald, G. M., & Kidd, G. (2018). Self-perceived effects of pornography consumption among heterosexual men. Psychology of Men & Masculinity, 19(3), 469-476. http://dx.doi.org/10.1037/men0000112

Abstract: Pornography has been identified as playing an increasingly important role in the sexual socialization of men. However, relatively little attention has been paid to men’s perceptions of their own pornography consumption. This study investigated self-perceived effects of pornography consumption among an online sample of heterosexual men (N = 312). The study used a short form version of the Pornography Consumption Effects Scale (PCES–SF). The PCES–SF measures both self-perceived positive and negative effects of pornography consumption across the domains of sex life, attitudes toward sex, life in general, perceptions, and attitudes toward the opposite gender, and sexual knowledge. Level of pornography use (measured in terms of frequency of use and average length of use) was positively predictive of both self-perceived positive and negative effects of pornography consumption. Those who indicated that they had never been regular users of pornography reported more negative effects than regular users. Older participants reported fewer negative effects than younger participants, even after controlling for level of pornography use. However, the relationship between age and perceived positive effects was nonsignificant. Religiosity was positively predictive of perceived negative effects, but unrelated to actual level of use. Overall, the sample perceived pornography to have a significantly greater positive than negative effect on their lives. This research is part of a growing body of literature that suggests that most men consider pornography to have a positive impact on their sexual self-schema and lives more generally.


Psychology of Men & Masculinity: Eating meat makes you sexy / Conformity to dietary gender norms and attractiveness

Timeo, S., & Suitner, C. (2018). Eating meat makes you sexy: Conformity to dietary gender norms and attractiveness. Psychology of Men & Masculinity, 19(3), 418-429. http://dx.doi.org/10.1037/men0000119

Abstract: Past research has highlighted links between meat consumption and masculine gender role norms such that meat consumers are generally attributed more masculine traits than their vegetable-consuming counterparts. However, the direct link between gender roles and men’s food choices has been somewhat neglected in the literature. Three studies conducted in Italy investigated this link between meat and masculinity. Studies 1 and 2 analyzed female mating preference for vegetarian and omnivorous partners, confirming that women preferred omnivorous men (Study 1 and 2), rated them as more attractive (Study 1 and 2), and felt more positive about them (Study 1) than vegetarians. Moreover Study 2 showed that the attribution of masculinity mediated this relationship, such that vegetarian men were considered less attractive because they were perceived as less masculine. Study 3 tested the relationship between the endorsement of food-related gender norms and food choices in a sample of Italian men. The results showed that men who perceived vegetarianism as feminine preferred meat-based dishes for themselves and expected their female partners to choose vegetarian dishes. Together, these findings show that gender role norms prescribing that men eat meat are actively maintained by both women and men and do in fact guide men’s food choices.

Low knowledge about autism is associated with thinking one knows more than experts; “overconfidence” is associated with anti-vaccine policy attitudes and with support for non-experts’ role in policymaking

Knowing less but presuming more: Dunning-Kruger effects and the endorsement of anti-vaccine policy attitudes. Matthew Motta, Timothy Callaghan, Steven Sylvester. Social Science & Medicine, https://doi.org/10.1016/j.socscimed.2018.06.032

Highlights
•    Low knowledge about autism is associated with thinking one knows more than experts.
•    “Overconfidence” is associated with anti-vaccine policy attitudes.
•    Overconfidence is also associated with support for non-experts’ role in policymaking.

Abstract

Objective: Although the benefits of vaccines are widely recognized by medical experts, public opinion about vaccination policies is mixed. We analyze public opinion about vaccination policies to assess whether Dunning-Kruger effects can help to explain anti-vaccination policy attitudes.

Rationale: People low in autism awareness – that is, the knowledge of basic facts and dismissal of misinformation about autism – should be the most likely to think that they are better informed than medical experts about the causes of autism (a Dunning-Kruger effect). This “overconfidence” should be associated with decreased support for mandatory vaccination policies and skepticism about the role that medical professionals play in the policymaking process.

Method: In an original survey of U.S. adults (N = 1310), we modeled self-reported overconfidence as a function of responses to a knowledge test about the causes of autism, and the endorsement of misinformation about a link between vaccines and autism. We then modeled anti-vaccination policy support and attitudes toward the role that experts play in the policymaking process as a function of overconfidence and the autism awareness indicators while controlling for potential confounding factors.

Results: More than a third of respondents in our sample thought that they knew as much or more than doctors (36%) and scientists (34%) about the causes of autism. Our analysis indicates that this overconfidence is highest among those with low levels of knowledge about the causes of autism and those with high levels of misinformation endorsement. Further, our results suggest that this overconfidence is associated with opposition to mandatory vaccination policy. Overconfidence is also associated with increased support for the role that non-experts (e.g., celebrities) play in the policymaking process.

Conclusion: Dunning-Kruger effects can help to explain public opposition to vaccination policies and should be carefully considered in future research on anti-vaccine policy attitudes.

Keywords: Vaccines; Dunning-kruger effects; Anti-vax; Political psychology; Health policy



In conservative cultures, individuals are likely to face costs such as punishment for short-term mating. Conservatives over-perceived hypothetical mates as long-term investing partners, despite their lack of commitment-compatible traits.

You’re Not My Type: Do Conservatives Have a Bias for Seeing Long-Term Mates? Naomi K. Muggleton, Corey L. Fincher. Evolution and Human Behavior, https://doi.org/10.1016/j.evolhumbehav.2018.06.009

Abstract: When choosing a mate, humans favour genetic traits (attractiveness, high sex drive) for short-term relationships and parental traits (warmth, high status) for long-term relationships. These preferences serve to maximise fitness of future offspring. But this model neglects the role of social norms in shaping evolved mating strategies. In conservative cultures, individuals are likely to face costs such as punishment for short-term mating. Here we show that conservatives over-perceive some mates’ suitability as long-term partners. Study 1 found that conservatives were less likely to use a short-term strategy that was distinctive from their long-term strategy. Study 2 showed that conservatives over-perceived hypothetical mates as long-term investing partners, despite their lack of commitment-compatible traits. Conservatism was measured at the regional- (India, USA, UK) and individual-level. Our results demonstrate how social norms may bias behaviour to reduce costs. We anticipate our findings to be a starting point for more sophisticated models, drawing on developments from evolutionary and social psychology.

Keywords: Mate choice; Conservatism; Behavioural ecology; Cross-cultural psychology; Sex differences

Evolutionary Theory: Male and Female Nipples as a Test Case for the Assumption that Functional Features Vary Less than Nonfunctional Byproducts

Male and Female Nipples as a Test Case for the Assumption that Functional Features Vary Less than Nonfunctional Byproducts. Ashleigh J. Kelly et al. Adaptive Human Behavior and Physiology, https://link.springer.com/article/10.1007/s40750-018-0096-1

Abstract

Objectives: Evolutionary researchers have sometimes taken findings of low variation in the size or shape of a biological feature to indicate that it is functional and under strong evolutionary selection, and have assumed that high variation implies weak or absent selection and therefore lack of function.

Methods: To test this assumption we compared the size variation (using a mean-adjusted measure of absolute variability) of the functional human female nipple (defined as the nipple-areola complex) with that of the non-functional human male nipple.

Results: We found that female nipples were significantly more variable than male nipples, even after controlling for body mass index, testing-room temperature, bust size in women, and chest size in men.

Conclusions: Morphological variation in a feature should not be used by itself to infer whether or not the feature is functional or under selection.

Women with more hook ups were more likely to experience a sense of accomplishment, satisfaction & a greater likelihood of receiving oral sex; women desire more reciprocity, oral and manual sex, and orgasms during their hook ups with men

What Happens in a Hook Up?: Young Women’s Behaviors, Emotions, and  Pleasures. Sarah N. Bell PhD Thesis. Michigan Univ., 2018. https://deepblue.lib.umich.edu/bitstream/handle/2027.42/144134/sarahnb_1.pdf

Abstract: “Hook ups” are common among adolescents and young adults on college campuses. Prior research positions women as risking a lot when they hook up, including physical, emotional, and social costs, while they stand to benefit little from hook ups. Additionally, research shows that women do not often experience orgasms during hook ups, but little is known about women’s pleasure in hook ups outside their rates of orgasm. The current studies sought to better understand what women’s experiences in hook ups consist of in terms of behaviors, emotions, and pleasures. Study 1 (discussed in Chapter 3) asked young women (N=23) to perform a card-sort in relation to their  actual and desired behaviors and emotions in their most recent hook up. Results from Study 1 show that women reported desiring more oral and manual sex and more  orgasms from a variety of sexual activities. Study 2 (discussed in Chapter 4) asked young college women (N=23) to participate in in-depth interviews regarding their sexual pleasure during hook ups with men. Results from Study 2 revealed that women reported that they experienced a range of different pleasures in their hook ups with men, including but not limited to orgasm. Women in Study 2 also discussed how the norms of hook up culture impacted their ability to prioritize or pursue their own sexual pleasure, and how men violated the norm of reciprocity. Study 3 (discussed in Chapter 5) surveyed young college women (N=102) about their behaviors, emotions, and pleasures in hook ups. Results from Study 3 revealed that a typical hook up involved a range of sexual behaviors; women reported giving oral sex more often than they received it. Women in Study 3 also reported frequent positive emotions in relation to their hook-ups and fewer negative emotions in contrast to prior research. Results from Study 3 also showed  that while a typical hook up included men’s orgasm, women rarely experienced orgasm in their  hook ups. Women who reported engaging in a greater number of hook ups in Study 3 were more likely to experience a sense of accomplishment, satisfaction and a greater likelihood of receiving oral sex from their partner. Across the three studies, women reported positive emotions in relation to their hook ups, but reported greater desire for more reciprocity, oral and manual sex, and orgasms during their hook ups with men. Results are discussed in relation to women’s sexual freedom to prioritize their own pleasure amidst a sexual milieu that privileges men’s pleasure during sexual encounters.

Democrats/liberals tended to smoke cigarettes and drink excessively; Republicans/conservatives tended to eat poorly, exercise less, not get the flu shot; ideology based variation in cognitive-motivational styles might explain this

Political orientation, political environment, and health behaviors in the United States. Viji Diane Kannan, Peter J. Veazie. Preventive Medicine, https://doi.org/10.1016/j.ypmed.2018.06.011

Highlights
•    Individual and ecological political measures are related to health behaviors.
•    Democrats/liberals tended to smoke cigarettes and drink excessively.
•    Republicans/conservatives tended to eat poorly, exercise less, not get the flu shot.
•    Republican regions had more flu shots, more cigarette smoking, and poorer diets.
•    Ideology based variation in cognitive-motivational styles might explain results.

Abstract: Political orientation (Republican/Democrat and conservative/liberal) and political environment (geo-spatial political party affiliated voting patterns) are both associated with various health outcomes, including mortality. Modern disease etiology in the U.S. suggests that many of our health outcomes derive from behaviors and lifestyle choices. Thus, we examine the associations of political orientation and political environment with health behaviors. We used the Annenberg National Health Communication Survey (ANHCS) data, which is a nationally representative U.S. survey fielded continuously from 2005 through 2012. The health behaviors studied include health information search, flu vaccination, excessive alcohol consumption, tobacco consumption, exercise, and dietary patterns. Democrats/liberals had higher odds of cigarette smoking and excessive drinking compared to Republicans/conservatives. Whereas, Republicans/conservatives ate fewer servings and fewer varieties of fruit and vegetables; ate more high fat and processed foods; and engaged in less in-depth health information searches compared to Democrats/liberals. Also, conservatives had lower odds of exercise participation than liberals; whereas Republicans had lower odds of flu vaccination. Greater Republican vote share in the 2008 and 2012 presidential elections at the state and/or county levels was associated with higher odds of flu vaccination and smoking cigarettes and lower odds of avoiding fat/calories, avoiding fast/processed food, eating a variety of fruits and vegetables, and eating more servings of fruit. We use the distinct cognitive-motivational styles attributed to political orientation in discussing the findings. Health communication strategies could leverage these relationships to produce tailored and targeted messages as well as to develop and advocate for policy.

Keywords: Health behavior; Politics; Psychology; Exercise; Diet, food, and nutrition; Flu vaccine; Tobacco smoking; Alcohol drinking; Health information

We study questionnaire responses to situations in which sacrificing one life may save many other lives; males are more supportive of the sacrifice than females. A source of the endorsement of sacrifice are the antisocial preferences.

Moral judgments, gender, and antisocial preferences: an experimental study. Juergen Bracht, Adam Zylbersztejn. Theory and Decision, https://link.springer.com/article/10.1007/s11238-018-9668-6

Abstract: We study questionnaire responses to situations in which sacrificing one life may save many other lives. We demonstrate gender differences in moral judgments: males are more supportive of the sacrifice than females. We investigate a source of the endorsement of the sacrifice: antisocial preferences. First, we measure individual proneness to spiteful behavior, using an experimental game with monetary stakes. We demonstrate that spitefulness can be sizable—a fifth of our participants behave spitefully—but it is not associated with gender. Second, we find that gender is consistently associated with responses even when we account for individual differences in the propensity to spitefulness.

Rolf Degen summarizing: Hate is dislike plus moral condemnation, plus the conviction that other reasonable people should feel the same way

Van Bavel, Jay J. 2018. “The Psychology of Hate: Moral Concerns Differentiate Hate from Dislike.” PsyArXiv. June 25. doi:10.17605/OSF.IO/X9Y2P

Abstract: Theories of hate date back several thousand years, yet very few experiments have examined the psychological structure of hate. We investigated whether any differences in the psychological experience of hate and dislike were a matter of degree (i.e. hate falls on the end of the continuum of dislike) or kind (i.e. hate is imbued with distinct cognitive, emotional, or motivational components that distinguish it from dislike). In a series of experiments, participants reported disliked and hated attitude objects and rated each on dimensions including valence, attitude strength, morality, and emotional content. Quantitative and qualitative measures provided convergent evidence that hated attitude objects were not only more negative than disliked attitude objects but also more likely to be associated with moral beliefs and emotions (Study 1). Further, differences in kind (i.e., moral beliefs and emotions) held even after statistically adjusting for diffebiparrences in degree (i.e., negativity). Subsequent research confirmed that hate not only differs from dislike but also from extreme dislike—providing a more stringent test of a difference in kind (Study 2)—and this difference was observed for both person and concept attitude objects (Study 3). A content analysis of online websites found that the language used on hate websites also differed in kind (i.e., moral content), but not degree (i.e., negativity), from complaint forums (Study 4). Thus, across quantitative and qualitative indices from the lab and the field, hated attitude objects were more likely to be associated with morality than disliked objects.

Monday, June 25, 2018

Powerless individuals were less inclined to express their anger directly but more inclined to express it indirectly by sharing it with others; powerful participants always expected to elicit more fear than anger in the target

Powerless People Don't Yell But Tell: The Effects of Social Power on Direct and Indirect Expression of Anger. Katerina Petkanopoulou. Rosa Rodríguez Bailón, Guillermo B. Willis, Gerben A. van Kleef. European Journal of Social Psychology, https://doi.org/10.1002/ejsp.2521

Abstract: Expressing anger can engender desired change, but it can also backfire. In the present research we examined how power shapes the expression of anger. In Study 1, we found that powerless individuals were less inclined to express their anger directly but more inclined to express it indirectly by sharing it with others. Powerless participants’ reluctance to express anger directly was mediated by negative social appraisals. In Study 2, we replicated the effect of power on direct anger expression in a situation in which participants had actual power (or not). Anger was evoked in the laboratory using an ecologically valid procedure, and participants were given an opportunity to express anger. Study 3 showed that powerless participants expected direct anger expression to arouse more anger than fear in the target, whereas the opposite was true for indirect anger expression. Powerful participants always expected to elicit more fear than anger in the target.

Eagerness and Optimistically Biased Metaperception: The More Eager to Learn Others’ Evaluations, the Higher the Estimation of Others’ Evaluation

Eagerness and Optimistically Biased Metaperception: The More Eager to Learn Others’ Evaluations, the Higher the Estimation of Others’ Evaluations. Jingyi Lu, Hebing Duan and Xiaofei Xie. Front. Psychol., May 15 2018 | https://doi.org/10.3389/fpsyg.2018.00715

Abstract: People frequently judge how they are viewed by others during social interactions. These judgments are called metaperceptions. This study investigates the relationship between eagerness to determine the evaluation of others and metaperceptions. We propose that eagerness, which reflects approach motivation, induces positive emotions. We apply feelings-as-information theory and hypothesize that positive emotions cause optimistic self-evaluations and metaperceptions. Participants in three studies interact with judges during a singing contest (Study 1), a speech (Study 2), and an interview (Study 3). Results corroborate that eagerness to learn the evaluation of others is overall related to optimistically biased metaperceptions. This effect is mediated sequentially by positive emotions, optimistic self-evaluations, and increased metaperceptions.

Negative information is better remembered than positive information, from which we predict that in comparison with negative retrospective evaluations, positive evaluations have a stronger correlation with end affect and a weaker correlation with peak affect. We confirm this.

The Retrospective Evaluation of Positive and Negative Affect. Yoav Ganzach et al. Personality and Social Psychology Bulletin, https://doi.org/10.1177/0146167218780695

Abstract: A vast amount of literature examined the relationship between retrospective affective evaluations and evaluations of affective experiences. This literature has focused on simple momentary experiences, and was based on a unidimensional concept of affect. The current article examines the relationships between evaluations of complex experiences, experiences involving both positive and negative feelings, and the retrospective evaluation of these experiences. Based on the idea that negative information is better remembered than positive information, we predict that in comparison with negative retrospective evaluations, positive evaluations have a stronger correlation with end affect and a weaker correlation with peak affect. These predictions are tested in two studies. We explore boundary conditions for these effects and demonstrate the implications of the asymmetry between positive and negative affect to various topics that are at the center of affect research: the dimensionality of affective experiences, the memory-experience gap, and the analysis of net affect.

Keywords: emotions, judgment and decision making, positive and negative affect, retrospective utility

Sunday, June 24, 2018

They find a substantial ex ante probability of there being no other intelligent life in our observable universe

Dissolving the Fermi Paradox. Anders Sandberg, Eric Drexler and Toby Ord. Future of Humanity Institute, Oxford University, June 8, 2018. arXiv:1806.02404v1

Abstract: The Fermi paradox is the conflict between an expectation of a high ex ante probability of intelligent life elsewhere in the universe and the apparently lifeless universe we in fact observe. The expect ation that the universe should be teeming with intelligent life is linked to models like the Drake equation, which suggest that even if the probability of intelligent life developing at a given site is small, the sheer multitude of possible sites should nonetheless yield a large number of potentially observable civilizations. We show that this conflict arises from the use of Drake-like equations, which implicitly assume certainty regarding highly uncertain parameters. We examine these parameters, incorporating models of chemical and genetic transitions on paths to the origin of life, and show that extant scientific knowledge corresponds to uncertainties that span multiple orders of magnitude. This makes a stark difference. When the model is recast to represent realistic distributions of uncertainty, we find a substantial ex ante probability of there being no other intelligent life in our observable universe, and thus that there should be little surprise when we fail to detect any signs of it. This result dissolves the Fermi paradox, and in doing so removes any need to invoke speculative mechanisms by which civilizations would inevitably fail to have observable effects upon the universe.

“I would Never Fall for That”: The Use of an Illegitimate Authority to Teach Social Psychological Principles

“I would Never Fall for That”: The Use of an Illegitimate Authority to Teach Social Psychological Principles. Sally D Farley, Deborah H. Carson, Terrence Pope. May 2018. https://www.researchgate.net/publication/325467243

Abstract: The current class activity explores attitudinal beliefs and behavioral responses of obedience to an illegitimate authority figure in an ambiguous situation. In Experiment 1, students either self- reported the likelihood that they would obey a request made by a stranger to surrender their cell phone, or were asked directly and in person by a confederate to relinquish their cell phone. The exercise revealed a marked discrepancy between how students predicted they would respond and how they actually did respond to the request. Across five classes, an average of 85.2% students obeyed the request. In Experiment 2, student learning was measured in addition to obedience. Although students exposed to the exercise had similar gains in learning as those exposed to a control condition, the mean obedience rate was a compelling 95.7%. Furthermore, students self- reported a greater willingness to obey the commands of an authority figure after learning about the Milgram study than before, thereby acknowledging their vulnerability to authority. We discuss the importance of including Milgram’s shock study in a comprehensive psychology curriculum, and provide recommendations for how this exercise might assist understanding of myriad social psychological principles including obedience, conformity, social influence, the attitude-behavior link, and the fundamental attribution error.


We Made History: Citizens of 35 Countries Overestimate Their Nation's Role in World History

We Made History: Citizens of 35 Countries Overestimate Their Nation's Role in World History. Franklin M. Zaromba et al. Journal of Applied Research in Memory and Cognition, https://doi.org/10.1016/j.jarmac.2018.05.006

Abstract: Following a survey asking many questions about world history, 6185 students from 35 countries were asked, “What contribution do you think the country you are living in has made to world history?” They provided an estimate from 0 to 100%, where 0% indicated that the country made no contribution to world history and 100% indicated that all contributions came from the country. U.S. students provided an estimate of 30%, quite high in some regards, but modest compared to other countries (e.g., 39% by Malaysians). Country-level estimates varied widely, ranging from 11% (Switzerland) to 61% (Russia). The total estimate (summing for all countries) was 1156%. We argue that students’ exaggerated estimates provide evidence for national narcissism and may be caused by several mechanisms, such as the availability heuristic—when students think about world history, they mostly think about the history of their country and thus assume their country must be important.

Keywords: Availability heuristic; Collective memory; Collective narcissism; Egocentrism; Myside bias; National narcissism

Saturday, June 23, 2018

Empirical evidence that there is social influence on private wine evaluations that is greater than the effect of experts’ ratings & prices combined; this influence comes mainly from the first few group members, & increases as a function of source uniformity

Omer Gokcekus, Miles Hewstone, and Huseyin Cakal (2018) In Vino Veritas? Social Influence on “Private” Wine Evaluations at a Wine Social Networking Site. Handbook of the Economics of Wine: pp. 423-437. https://doi.org/10.1142/9789813232754_0018

Abstract: An archival analysis of evaluations of wines provides a unique context in which to investigate social influence in a naturalistic setting. We conducted analyzes based on 6,157 notes about 106 wines posted by wine drinkers at a wine social networking site. Our findings suggest that social influence on private wine evaluations occurred by communicating a descriptive norm via written information. We provide empirical evidence that there is social influence on private wine evaluations that is greater than the effect of experts’ ratings and prices combined. This influence comes mainly from the first few group members, and increases as a function of source uniformity. Together with a lack of evidence that more credible or expert members have more influence, these findings suggest that influence in this setting is normative rather than informational. Results have implications for widespread effects of social influence on consumer and other websites where we are subject to the power of others’ opinions.

Probability of sharing political fake news online is higher in males than females & and older people more than youngers; democrat voters have less probability to share political fake news than independent voters (there is no statistical significance between democrats and republicans)

The Sociology of Fake News: Factors Affecting the Probability of Sharing Political Fake News Online. Manuel Goyanes, Ana Lavin. Media@LSE Working Paper #55, 2018, https://www.researchgate.net/publication/325721782

Abstract: Drawing on recent literature on fake news, this working paper sheds light on the demographic factors and situational predictors that influence the probability to share political fake news through social media platforms. By using a representative sample of 1.002 US adults from the Pew Research Center, the results of the logistic regression analysis revealed relationships between the probability to share political fake news online and predictor variables such as demographics (age, gender, political orientation and income), and situational factors (perception of frequency of political fake news online, previous unconsciously fake news sharing and perception of responsibility [of different agents]). The research offers evidence regarding the prototype user that contributes to the spread of misinformation and the main implications that this phenomenon entails for professional journalism.

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By using a logistic regression analysis, nine main findings emerged: (1) the probability of sharing political fake news online is higher in males than females; (2) older people are more likely to share political fake news online than younger people; (3) people with lower incomes have more probability to share political fake news online; (4) democrat voters have less probability to share political fake news than independent voters (there is no statistical significance between democrats and republicans); (5) people who have a high perception of frequency of online fake news are more likely to share political fake news; (6) people who inadvertently have shared fake news have less probability to share political fake news online on purpose; (7) people who grant great responsibility to the public in preventing fake news stories from gaining attention are less likely to share political fake news; (8) people who grant great responsibility to social networking sites in preventing fake news stories from gaining attention are more likely to share political fake news stories and (9) democrat‐female voters are less likely to share political fake news than male‐independent voters.


Check also Lazy, not biased: Susceptibility to partisan fake news is better explained by lack of reasoning than by motivated reasoning. Gordon Pennycook, David G. Rand. Cognition, https://www.bipartisanalliance.com/2018/06/susceptibility-to-partisan-fake-news-is.html
Susceptibility to partisan fake news is better explained by lack of reasoning (lazyness in thinking) than by motivated reasoning (partisanship)
Also Read All About It: The Politicization of “Fake News” on Twitter. John Brummette et al. Journalism & Mass Communication Quarterly, Volume: 95 issue: 2, page(s): 497-517. https://www.bipartisanalliance.com/2018/06/fake-news-is-politicized-term-where.html
“Fake news” is a politicized term where conversations overshadowed logical & important discussions of the term; social media users from opposing political parties communicate in homophilous environments & use “fake news” to disparage the opposition & condemn real information

And: Fake news and post-truth pronouncements in general and in early human development. Victor Grech. Early Human Development, http://www.bipartisanalliance.com/2017/09/fake-news-and-post-truth-pronouncements.html

And: Consumption of fake news is a consequence, not a cause of their readers’ voting preferences. Kahan, Dan M., Misinformation and Identity-Protective Cognition (October 2, 2017). Social Science Research Network, http://www.bipartisanalliance.com/2017/10/consumption-of-fake-news-is-consequence.html

And: Barbera, Pablo and Tucker, Joshua A. and Guess, Andrew and Vaccari, Cristian and Siegel, Alexandra and Sanovich, Sergey and Stukal, Denis and Nyhan, Brendan (2018) Social media, political polarization, and political disinformation: a review of the scientific literature. William + Flora Hewlett Foundation, California. https://www.bipartisanalliance.com/2018/04/a-great-deal-of-public-outcry-against.html
"A great deal of the public outcry against fake news, echo chambers and polarization on social media is itself based on misinformation"

Women expressed higher educational preferences during their years of maximum fertility, their demand choosiness decreased with age; men’s choosiness remained stable until the 40s, from which it increased until their peak years of career-earnings potential

Do Men and Women Know What They Want? Sex Differences in Online Daters’ Educational Preferences. Stephen Whyte et al. Psychological Science, https://doi.org/10.1177/0956797618771081

Abstract: Using a unique cross-sectional data set of dating website members’ educational preferences for potential mates (N = 41,936), we showed that women were more likely than men to stipulate educational preferences at all ages. When members indifferent to educational level were excluded, however, the specificity of men’s and women’s preferences did differ for different age groups. That is, whereas women expressed more refined educational preferences during their years of maximum fertility, their demand specificity decreased with age. Men’s specificity, in contrast, remained stable until the 40s, when it was greater than that of postreproductive women, and then was higher during their peak years of career-earnings potential. Further, when individuals’ level of education was controlled for, women (compared with men) were more likely to state a higher minimum preference for educational level in a potential mate.

Keywords: parental-investment theory, educational preference, sex differences, online dating, mate choice

Friday, June 22, 2018

Populations that are Western, Educated, Industrialized, Rich and Democratic (WEIRD) are peculiar due to the medieval church's set of rules governing descent, marriage, residence, etc., leading to the predominance of nuclear families and impersonal institutions

Schulz, Jonathan, Duman Barahmi-Rad, Jonathan Beauchamp, and Joseph Henrich. 2018. “The Origins of WEIRD Psychology.” PsyArXiv. June 22. doi:10.17605/OSF.IO/D6QHU. Final version: The Church, intensive kinship, and global psychological variation, Science, Nov 2019, https://science.sciencemag.org/content/366/6466/eaau5141

Abstract: Recent research not only confirms the existence of substantial psychological variation around the globe but also highlights the peculiarity of populations that are Western, Educated, Industrialized, Rich and Democratic (WEIRD). We propose that much of this variation arose as people psychologically adapted to differing kin-based institutions—the set of social norms governing descent, marriage, residence and related domains. We further propose that part of the variation in these institutions arose historically from the Catholic Church’s marriage and family policies, which contributed to the dissolution of Europe’s traditional kin-based institutions, leading eventually to the predominance of nuclear families and impersonal institutions. By combining data on 20 psychological outcomes with historical measures of both kinship and Church exposure, we find support for these ideas in a comprehensive array of analyses across countries, among European regions and between individuals with different cultural backgrounds.

In the final version, link to full text above:

Structured Abstract

INTRODUCTION
A growing body of research suggests that populations around the globe vary substantially along several important psychological dimensions and that populations characterized as Western, Educated, Industrialized, Rich, and Democratic (WEIRD) are particularly unusual. People from these societies tend to be more individualistic, independent, and impersonally prosocial (e.g., trusting of strangers) while revealing less conformity and in-group loyalty. Although these patterns are now well documented, few efforts have sought to explain them. Here, we propose that the Western Church (i.e., the branch of Christianity that evolved into the Roman Catholic Church) transformed European kinship structures during the Middle Ages and that this transformation was a key factor behind a shift towards a WEIRDer psychology.

RATIONALE
Our approach integrates three insights. First, anthropological evidence suggests that diverse kin-based institutions—our species’s most fundamental institutions—have been the primary structure for organizing social life in most societies around the world and back into history. With the origins of agriculture, cultural evolution increasingly favored intensive kinship norms related to cousin marriage, clans, and co-residence that fostered social tightness, interdependence, and in-group cooperation. Second, psychological research reveals that people’s motivations, emotions, and perceptions are shaped by the social norms they encounter while growing up. Within intensive kin-based institutions, people’s psychological processes adapt to the collectivistic demands of their dense social networks. Intensive kinship norms reward greater conformity, obedience, and in-group loyalty while discouraging individualism, independence, and impersonal motivations for fairness and cooperation. Third, historical research suggests that the Western Church systematically undermined Europe’s intensive kin-based institutions during the Middle Ages (for example, by banning cousin marriage). The Church’s family policies meant that by 1500 CE, and likely centuries earlier in some regions, Europe lacked strong kin-based institutions and was instead dominated by relatively independent and isolated nuclear or stem families.

Our theory predicts that populations with (i) a longer historical exposure to the medieval Western Church or less intensive kin-based institutions will be more individualistic, less conforming, and more impersonally prosocial today; and (ii) longer historical exposure to the Western Church will be associated with less-intensive kin-based institutions.

RESULTS
We test these predictions at three levels. Globally, we show that countries with longer historical exposure to the medieval Western Church or less intensive kinship (e.g., lower rates of cousin marriage) are more individualistic and independent, less conforming and obedient, and more inclined toward trust and cooperation with strangers (see figure). Focusing on Europe, where we compare regions within countries, we show that longer exposure to the Western Church is associated with less intensive kinship, greater individualism, less conformity, and more fairness and trust toward strangers. Finally, comparing only the adult children of immigrants in European countries, we show that those whose parents come from countries or ethnic groups that historically experienced more centuries under the Western Church or had less intensive kinship tend to be more individualistic, less conforming, and more inclined toward fairness and trust with strangers.

CONCLUSION
This research suggests that contemporary psychological patterns, ranging from individualism and trust to conformity and analytical thinking, have been influenced by deep cultural evolutionary processes, including the Church’s peculiar incest taboos, family policies, and enduring kin-based institutions.

As predicted by our theory, countries with a longer exposure to the medieval Western Church have lower rates of cousin marriage (A); countries with lower rates of cousin marriage have a more individualistic and impersonally prosocial psychology (B); and countries with a longer exposure to the medieval Western Church have a more individualistic and impersonally prosocial psychology (C). Blue dots, green diamonds, and gray triangles denote countries primarily exposed to the Western Church, to the Eastern Church, and with no church exposure, respectively. ρˆ denotes Spearman correlation.


Abstract

Recent research not only confirms the existence of substantial psychological variation around the globe but also highlights the peculiarity of many Western populations. We propose that part of this variation can be traced back to the action and diffusion of the Western Church, the branch of Christianity that evolved into the Roman Catholic Church. Specifically, we propose that the Western Church’s transformation of European kinship, by promoting small, nuclear households, weak family ties, and residential mobility, fostered greater individualism, less conformity, and more impersonal prosociality. By combining data on 24 psychological outcomes with historical measures of both Church exposure and kinship, we find support for these ideas in a comprehensive array of analyses across countries, among European regions, and among individuals from different cultural backgrounds.

A growing body of research suggests that populations around the globe vary substantially along several important psychological dimensions and that people from societies characterized as Western, Educated, Industrialized, Rich, and Democratic (WEIRD) are particularly unusual (1–3). Often occupying the extremes of global distributions, Western Europeans and their cultural descendants in North America and Australia tend to be more individualistic, independent, analytically minded, and impersonally prosocial (e.g., trusting of strangers) while revealing less conformity, obedience, in-group loyalty, and nepotism (3–12). Although these patterns are now well documented, efforts to explain this variation from a cultural-evolutionary and historical perspective have just begun (12–16). In this study, we develop and test a cultural evolutionary theory that aims to explain a substantial portion of this psychological variation, both within and across nations.

Our approach begins by considering how religions have evolved in ways that shape people’s institutions, social practices, economic outcomes, and psychology (17–22). Research in this area has, for example, documented the effect of Christian missions on both formal schooling and economic prosperity in places as diverse as Africa, China, and South America (23–26). Here, highlighting a less conspicuous channel, we go deeper into history and test the theory that the Western Catholic Church, primarily through its influence on marriage and family structures during the Middle Ages, had an important impact on psychological variation. Not only does our approach contribute to explaining why European and European-descent societies so often occupy the tail ends of global psychological distributions, it also helps explain variation within Europe—among countries, across regions within countries, and among individuals in the same country and region but with different cultural backgrounds.

To develop these ideas, our theory integrates three insights, drawing principally on anthropology, psychology, and history (27). First, anthropological research suggests that kin-based institutions represent the most fundamental of human institutions and have long been the primary framework for organizing social life in most societies (28–31). These institutions are composed of culturally transmitted norms that influence a broad range of social relationships by endowing individuals with sets of obligations and privileges with respect to their communities (supplementary text, section S1). Many kinship systems, for example, extend our species’s innate aversion to inbreeding (incest) to create taboos on marriage to more distant relatives, usually including particular types of cousins (32). By shaping patterns of marriage, residence, relatedness, and alliance formation, these norms organize interpersonal interactions and configure social networks in ways that profoundly influence social incentives and behavior (27, 33–35).

Although all premodern societies are organized primarily by kin-based institutions, evidence suggests that the character of these diverse institutions has been substantially influenced by ecological, climatic, and geographic factors (28, 30, 33, 34, 36–38). For instance, among mobile hunter-gatherers, cultural evolution has responded to ecological risk by favoring “extensive” kin ties, which create sprawling relational networks that can be tapped when local disasters strike (30, 37, 39). However, with the emergence of food production roughly 12,000 years ago, cultural evolution increasingly favored “intensive” kin-based institutions that permitted communities to unify larger groups to defend territories and organize production (30, 40–43). By constructing denser, tighter, and more interdependent social networks, these kin-based institutions intensified in-group loyalty, conformity, obedience to elders, and solidarity. For example, instead of favoring marriages to distant kin, cultural evolution often favored some form of cousin marriage, which tightened existing bonds among families (28). Cultural evolution thus led to a diversity of intensive kin-based institutions, including clans and kindreds (28, 32, 44), which dramatically restructured people’s social environments (27, 45, 46).

Our second insight, drawing on psychology and neuroscience, recognizes how aspects of our cognition, emotions, perceptions, thinking styles, and motivations adapt—often over ontogeny—to the normative demands, reputational incentives, and values of the interdependent social networks threaded together by kin-based institutions (3, 13, 27, 47–52). In particular, within intensive kin-based institutions, people’s psychological processes adapt to the collectivistic demands and the dense social networks in which they are enmeshed (53, 54). These institutions, thus, incentivize the cultivation of greater conformity, obedience, nepotism, deference to elders, holistic-relational awareness, and in-group loyalty but discourage individualism, independence, and analytical thinking (55). Because the sociality of intensive kinship is based on interpersonal embeddedness, adapting to these institutions reduces people’s inclinations toward impartiality, universal (nonrelational) moral principles, and impersonal trust, fairness, and cooperation; these institutions instead foster a contextually sensitive morality rooted in in-group loyalty.

Finally, drawing on historical research, our third insight incorporates the role of religion and its influence on kin-based institutions (27). By the start of the Common Era (CE), universalizing religions with powerful moralizing gods (or cosmic forces), universal ethical codes, and contingent afterlife beliefs had emerged across the Old World. However, these competing religions varied greatly in how their religious beliefs and practices shaped kin-based institutions (20, 56). In Persia, for example, Zoroastrians glorified the marriage of close relatives, including siblings, and encouraged widespread cousin marriage. Later, Islam curbed polygynous marriage (limiting a man to no more than four wives) but also adopted inheritance customs that promoted a nearly unique form of cousin marriage in which a daughter marries her father’s brother’s son—patrilineal clan endogamy (57–59). Beginning in Late Antiquity, the branch of Christianity that eventually evolved into the Roman Catholic Church—hereafter, the Western Church or simply the Church—systematically undermined Europe’s intensive kin-based institutions through a combination of religious prohibitions and prescriptions (46, 59–62). Prior to the Church’s efforts, the kin-based institutions of most European populations looked much like other agricultural societies and included patrilineal clans, kindreds, cousin marriage, polygyny, ancestor worship, and corporate ownership (27, 59, 60, 63–73). Meanwhile, although the branch of Christianity based in Constantinople that eventually evolved into the Orthodox Church—the Eastern Church—did adopt some of the same prohibitions as the Western Church, it never endorsed the Western Church’s broad taboos on cousin marriage, was slow to adopt many policies, and was unenthusiastic about enforcement.

The Western Church’s policies, which we call the Marriage and Family Program (MFP) (27), began with targeted bans on certain marriage practices used to sustain alliances between families (e.g., levirate marriage); however, by the Early Middle Ages, the Church had become obsessed with incest and began to expand the circle of forbidden relatives, eventually including not only distant cousins but also step-relatives, in-laws, and spiritual kin. Early in the second millennium, the ban was stretched to encompass sixth cousins, including all affines. At the same time, the Church promoted marriage “by choice” (no arranged marriages) and often required newly married couples to set up independent households (neolocal residence). The Church also forced an end to many lineages by eliminating legal adoption, remarriage, and all forms of polygamous marriage, as well as concubinage, which meant that many lineages began literally dying out due to a lack of legitimate heirs. As a result of the MFP, by 1500 CE (and centuries earlier in some regions), much of Europe was characterized by a virtually unique configuration of weak (nonintensive) kinship marked by monogamous nuclear households, bilateral descent, late marriage, and neolocal residence (59–62, 64, 74, 75).

Our theory, by synthesizing these insights, predicts that populations with a longer exposure to the medieval Western Church or less-intensive kin-based institutions will be less conforming but more individualistic and impersonally prosocial. At the same time, longer exposure to the Western Church should be associated with less intensive kin-based institutions. Of course, our theory does not preclude the existence of other important contributors to psychological variation, such as influences from the Church via channels other than kin-based institutions.

We emphasize that, in the absence of a decisive natural experiment in history, it is difficult to establish unassailable causal links between the Church’s MFP, kin-based institutions, and psychology (supplementary text S3). Our empirical approach has been to select both our psychological outcomes and explanatory variables ex ante on the basis of our theoretical predictions and then to repeatedly test for the expected relationships at different levels of analysis while controlling for an extensive battery of individual, regional, and historical covariates.

Years of education significantly raises suicide mortality risk in the US after controlling for initial self-reported health; this is robust to regression specification, replication & the inclusion of covariates

The education–suicide mortality gradient. Adam Cook. Applied Economics Letters, https://doi.org/10.1080/13504851.2018.1489499

ABSTRACT: Using the fifth release of the National Longitudinal Mortality Survey, I examine the role of educational attainment and self-reported health on 6- and 11-year suicide mortality risk in the United States. I first replicate the original results reported by Hamermesh and Soss. . Then, augmenting the Hamermesh model with initial educational attainment and self-reported health status, I find that years of education significantly raises suicide mortality risk in the US after controlling for initial self-reported health. This result is robust to regression specification, replication and the inclusion of covariates.

KEYWORDS: Suicide, education, health, mortality, human capital
JEL CLASSIFICATION: I12, I21, C21

Humility does not necessarily lead to more pleasant or fulfilling experiences, but psychological well-being is conducive to cultivating humility

Concurrent and Temporal Relationships Between Humility and Emotional and Psychological Well-Being. Eddie M. W. Tong et al. Journal of Happiness Studies, https://link.springer.com/article/10.1007/s10902-018-0002-3

Abstract: The present research is a preliminary investigation of the concurrent and temporal relationships between humility and two forms of well-being: emotional and psychological well-being. Humility, emotional well-being and psychological well-being were measured twice 6 weeks apart. Humility correlated positively with psychological well-being at both time-points, but was positively related to emotional well-being at only one time-point. In addition, we used structural equation modeling to perform cross-lagged panel analyses, and found that psychological well-being predicted an increase in humility over time, but humility did not predict changes in psychological well-being over time. In addition, there were no cross-lagged associations between emotional well-being and humility. The results suggest that humility does not necessarily lead to more pleasant or fulfilling experiences, but psychological well-being is conducive to cultivating humility.

Those who kill in dreams have been more violent in the past than those who do not have such dreams, scored higher in neuroticism & aggression, reported more creative achievements, & had more creative achievements than persons without those dreams

Mathes, J., Renvert, M., Eichhorn, C., von Martial, S. F., Gieselmann, A., & Pietrowsky, R. (2018). Offender-nightmares: Two pilot studies. Dreaming, 28(2), 140-149. http://dx.doi.org/10.1037/drm0000084

Abstract: Being the victim of an aggressor in nightmares is quite common for most persons, but there are also nightmares where the dream-self can become the offender. Two studies were conducted in two nonclinical samples of participants with frequent nightmares to investigate the so-called offender-nightmares. Study 1 served to assess the frequency of offender-nightmares in persons with frequent nightmares and the motives and actions in these dreams during a 28-day interval, whereas in Study 2, correlations to personality variables were investigated. The results indicate that the occurrence of offender-nightmares is not negligible; about 18% to 28% of the reported nightmares were classified as offender-nightmares. Most of the aggressive acts in these dreams were intentional, and killing a person was the most prominent offender’s act, with self-defense being the most common motive. Persons with offender-nightmares were also found to have been more violent in the past than persons without offender-nightmares and persons without nightmares. In addition, they scored higher in neuroticism and aggression, reported more creative achievements than persons without nightmares, and had more creative achievements than persons without offender-nightmares. The results suggest that offender-nightmares are rather common in people who frequently have nightmares and that these dreams are related to aggressiveness, creativity, and previous violent experiences.

Media use & gender relationship to nightmares

Gackenbach, J., Yu, Y., & Lee, M.-N. (2018). Media use and gender relationship to the nightmare protection hypothesis: A cross-cultural analysis. Dreaming, 28(2), 169-192. http://dx.doi.org/10.1037/drm0000066

Abstract: Chinese and Canadian people answered surveys in their native languages about their self-construal, media use history, and dreaming experiences. This included reporting a recent dream. The nightmare protection thesis was investigated. Sex was found to be modulated by culture in terms of the relationship between types of media used and negative dream content. This was particularly evident for men in Greater China versus Canada along the self-construal dimension of interdependence. As both cultures reported no difference in independent self-construal, it was argued that it is the role of interdependence that accounts for male differences between cultures. In addition, each media type highlighted a different cultural value. Specifically, gaming seemed more consistent with independence, whereas social media was consistent with interdependence. When dreams were considered, source data were important. Specifically, when respondents answered in terms of their impressions of their dream history, high social media users reported more bad dreams across sex and country. However, for the video game groups, a 3-way interaction emerged where country, sex, and gaming evidenced different patterns of bad dream scores. The other self-report dream measure was emotions felt during a recent dream, with general negative and positive emotions showing group differences. Finally, the judges’ coding of negative elements of dreams, threat and aggression, was most sensitive to social media effects. Across all the threat simulation interactions where country was an independent variable, the male sex in each country was most likely to show opposite results from the female sex.

Gender Equality and the Gender Gap in Mathematics: Improvement in gender equality does not reduce the gender gap

Gender Equality and the Gender Gap in Mathematics. Hung-Lin Tao & Christos Michalopoulos. Journal of Biosocial Science, Volume 50, Issue 2, March 2018 , pp. 227-243. https://doi.org/10.1017/S0021932017000141

Summary: A gender gap has been found in mathematics (boys outperform girls) that has prevailed across countries for many decades. Whether this gap results from nature or nurture has been hotly debated. Using the evidence of PISA 2003 and the gender equality index of 2003, some researchers have argued that an improvement in gender equality reduces the gender gap in mathematics. This study used five waves of country-level PISA data and, controlling for country fixed effects, found no evidence to support this argument. Furthermore, individual data for PISA 2012 and the multilevel data model were used. The conclusion drawn also does not support the argument. In fact, the relationship between gender equality and the gender gap in mathematics vanished after PISA 2003.

h/t: Rolf Degen https://twitter.com/DegenRolf

Monozygotic twin differences in school performance are stable and systematic: Non‐shared environmental factors affect school performance in systematic ways that have long‐term & generalist influence

Monozygotic twin differences in school performance are stable and systematic. Sophie von Stumm, Robert Plomin. Developmental Science, https://doi.org/10.1111/desc.12694

Abstract: School performance is one of the most stable and heritable psychological characteristics. Notwithstanding, monozygotic twins (MZ), who have identical genotypes, differ in school performance. These MZ differences result from non‐shared environments that do not contribute to the similarity within twin pairs. Because to date few non‐shared environmental factors have been reliably associated with MZ differences in school performance, they are thought to be idiosyncratic and due to chance, suggesting that the effect of non‐shared environments on MZ differences are age‐ and trait‐specific. In a sample of 2768 MZ twin pairs, we found first that MZ differences in school performance were moderately stable from age 12 through 16, with differences at the ages 12 and 14 accounting for 20% of the variance in MZ differences at age 16. Second, MZ differences in school performance correlated positively with MZ differences across 16 learning‐related variables, including measures of intelligence, personality and school attitudes, with the twin who scored higher on one also scoring higher on the other measures. Finally, MZ differences in the 16 learning‐related variables accounted for 22% of the variance in MZ differences in school performance at age 16. These findings suggest that, unlike for other psychological domains, non‐shared environmental factors affect school performance in systematic ways that have long‐term and generalist influence. Our findings should motivate the search for non‐shared environmental factors responsible for the stable and systematic effects on children’s differences in school performance.

h/t: Rolf Degen https://twitter.com/DegenRolf

Thursday, June 21, 2018

Is the Illusory Truth Effect Robust to Individual Differences in Cognitive Ability, Need for Cognitive Closure, and Cognitive Style? Intelligence (cognitive ability) doesn't help to combat the effect of repetition

De keersmaecker, Jonas and Roets, Arne and Pennycook, Gordon and Rand, David G., Is the Illusory Truth Effect Robust to Individual Differences in Cognitive Ability, Need for Cognitive Closure, and Cognitive Style? (April 17, 2018). http://dx.doi.org/10.2139/ssrn.3164151

Abstract: People are more inclined to believe that information is true if they have encountered it before. Although this illusory truth effect is firmly established, little is known about whether it is influenced by inter-individual differences in high-level cognition. Here we focus on three factors that have been shown to play a critical role in a wide variety of epistemic processes: cognitive ability, need for cognitive closure, and cognitive styles. In a first lab study (N = 207), there was no evidence for the moderating role of cognitive ability, need for cognitive closure, or preference for analytic thinking, but individual differences in experiential thinking increased the illusory truth effect. A second, preregistered study (N = 336), however, did not replicate the moderating role of experiential thinking, and also found no evidence for moderation by preference for analytic thinking and cognitive reflection. Finally, in a third study (N = 940), the illusory truth effect was examined using a highly involving set of stimuli, i.e. politically charged news headlines. Again, individual differences in cognitive reflection did not moderate the effect. These results demonstrate that the illusory truth effect is robust to individual differences in cognitive ability, need for cognitive closure and cognitive style.

Keywords: Illusory Truth Effect; Cognitive Style; Cognitive Ability; Need for Cognitive Closure; Decision Making

Susceptibility to partisan fake news is better explained by lack of reasoning (lazyness in thinking) than by motivated reasoning (partisanship)

Lazy, not biased: Susceptibility to partisan fake news is better explained by lack of reasoning than by motivated reasoning. Gordon Pennycook, David G. Rand. Cognition, https://doi.org/10.1016/j.cognition.2018.06.011

Highlights
•    Participants rated perceived accuracy of fake and real news headlines.
•    Analytic thinking was associated with ability to discern between fake and real.
•    We found no evidence that analytic thinking exacerbates motivated reasoning.
•    Falling for fake news is more a result of a lack of thinking than partisanship.

Abstract: Why do people believe blatantly inaccurate news headlines (“fake news”)? Do we use our reasoning abilities to convince ourselves that statements that align with our ideology are true, or does reasoning allow us to effectively differentiate fake from real regardless of political ideology? Here we test these competing accounts in two studies (total N = 3446 Mechanical Turk workers) by using the Cognitive Reflection Test (CRT) as a measure of the propensity to engage in analytical reasoning. We find that CRT performance is negatively correlated with the perceived accuracy of fake news, and positively correlated with the ability to discern fake news from real news – even for headlines that align with individuals’ political ideology. Moreover, overall discernment was actually better for ideologically aligned headlines than for misaligned headlines. Finally, a headline-level analysis finds that CRT is negatively correlated with perceived accuracy of relatively implausible (primarily fake) headlines, and positively correlated with perceived accuracy of relatively plausible (primarily real) headlines. In contrast, the correlation between CRT and perceived accuracy is unrelated to how closely the headline aligns with the participant’s ideology. Thus, we conclude that analytic thinking is used to assess the plausibility of headlines, regardless of whether the stories are consistent or inconsistent with one’s political ideology. Our findings therefore suggest that susceptibility to fake news is driven more by lazy thinking than it is by partisan bias per se – a finding that opens potential avenues for fighting fake news.

Keywords: Fake news; News media; Social media; Analytic thinking; Cognitive reflection test; Intuition; Dual process theory

Who’s Getting the Best Sex? A Comparison by Sexual Orientation

Who’s Getting the Best Sex? A Comparison by Sexual Orientation. Lacey J. Ritter, Hannah R. Morris, David Knox. Sexuality & Culture, https://link.springer.com/article/10.1007/s12119-018-9538-y

Abstract: This study examined the difference in sexual satisfaction between sexual minority and heterosexual college students testing the mediation effects of institutional affiliations and interpersonal relationships. A convenience sample of 280 college sociology students completed a 47-item Internet questionnaire, including self-reports on sexual satisfaction and sexual behaviors/activities. Data on 193 heterosexuals and 87 sexual minority respondents were analyzed using regression to test for differences in reported levels of sexual satisfaction by sexual orientation. Results revealed that sexual minority undergraduates reported lower sexual satisfaction than heterosexual undergraduates. This difference persisted when controlling for sex, race, education, and SES. Mediation analyses found support for the hypothesis that institutional affiliations and interpersonal relationships have an effect on this association. Previous researchers have suggested that sexual minority relationships exist in a context of heterosexism, suppression, stigmatization, prejudice, discrimination and violence which results in lower relationship quality. Such an impact on minority couples’ satisfaction may spill over into lower sexual satisfaction.

Undressed for Success? The Effects of Half-Naked Women on Economic Behavior

Bonnier, Evelina and Dreber, Anna and Hederos Eriksson, Karin and Sandberg, Anna, Undressed for Success? The Effects of Half-Naked Women on Economic Behavior (May 15, 2018). http://dx.doi.org/10.2139/ssrn.3168626

Abstract: Images of half-naked women are in many societies ubiquitous in advertising and popular culture. Yet relatively little is known about the potential impacts of such images on economic decision making. In this paper, we examine how exposure to images of half-naked women affect risk taking, willingness to compete and math performance. We perform a lab experiment with a total of 648 participants of both genders, randomly exposing participants to advertising images including either women in bikini or underwear, fully dressed women, or no women. Exposure to images of half-naked women could potentially have effects on economic preferences and performance through channels such as arousal, cognitive load and stereotyping. Following a pre-registered pre-analysis plan, we find no treatment effects on any of the outcome measures for female participants. For male participants, we also find no effect on willingness to compete or math performance, but our results indicate that men take more risk after having been exposed to images of half-naked women compared to images including no women. We thus do not find any strong support for the hypothesis that exposure to images of half-naked women impact economic preferences, but given the indications of an effect on men's risk taking future studies should explore this further.

Keywords: economic decision making, risk preferences, willingness to compete, altruism, experiment
JEL Classification: D03, C91

Again, those in the lower economic level ask less for redistribution

Fatke, Matthias, Inequality and Political Behavior: Objective Levels Versus Subjective Perceptions (March 8, 2018).  http://dx.doi.org/10.2139/ssrn.3136254

Abstract: Inequality poses one of the biggest challenges of our time. Evidently, it is not self-correcting in the sense that citizens demand more redistributive measures in light of rising inequality. Recent studies suggest this might be due to the fact that citizens’ perceptions of inequality diverge from objective levels. Moreover, it is not the latter, but the former, which are related to preferences conducive to redistribution. Yet, the nascent literature on inequality perceptions exhibits at least two lacunae. First, studies so far have not accounted for the role of subjective position in society. And second, studies on political participation and attitudes still rely by and large on objective levels of inequality. Against this backdrop, our paper advances two arguments: the relationship between inequality perceptions and preferences towards redistribution is conditional on the subjective position of respondents; and political participation and attitudes are rather related to subjective perceptions of inequality instead of objective levels. To that end, we analyze comprehensive survey data on inequality perceptions from the social inequality module of the International Social Survey Programme (1992, 1999, and 2009). Since no comparative data with indicators for both inequality perceptions and political behavior is available, we join additionally a wave of the 2004 ISSP and apply multiple imputation. This allows, for the first time, testing subjective perceptions of inequality as predictor of political behavior. Gaining a better understanding of inequality perceptions contributes to comprehending the absence self-correcting inequality.

Keywords: Inequality, Political Behavior, Redistribution, Participation, Protest, Perceptions
JEL Classification: D63, D01, D72, D91

Check also: "We document a statistically significant and robust positive relation between risk aversion and the demand for redistribution that is also economically important. We show that previously used proxies for risk aversion (such as being an entrepreneur or having a history of unemployment) do not capture the effect of our measure of risk aversion but have distinctly different effects on the demand for redistribution." From Individual risk preferences and the demand for redistribution. Manja Gärtner, Johanna Mollerstrom and David Seim. Journal of Public Economics, v 153, September 2017, Pages 49-55. http://www.bipartisanalliance.com/2017/08/individual-risk-preferences-and-demand.html

An Empirical Test of Pure Altruism Theory on Blood Type and Blood Donation Behaviors: More donations when O-type individuals knew & believed that their blood can be medically transfused into individuals of all blood groups

Blood Type and Blood Donation Behaviors: An Empirical Test of Pure Altruism Theory. Shusaku Sasaki et al. ISER Discussion Paper No. 1029, https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3171957

Abstract: We examined whether the knowledge that your private donation has a large number of potential recipients causes you to give more or less. We found that the people with blood type O are more likely to have donated blood than those with other blood types, by using a Japan’s nationally representative survey. This association was found to be stronger in a subsample of individuals who knew and believed that blood type O can be medically transfused into individuals of all blood groups. However, we found that blood type O does not have any significant relationship with the other altruistic behaviors (registration for bone-marrow donation, intention to donate organs, and the making of monetary donations) and altruistic characteristics (altruism, trust, reciprocity, and cooperativeness). After further analyses, we confirmed that the wider number of potential recipients of blood type O donations promoted the blood-donation behaviors of the people with this blood type.

Keywords: ABO Blood Group, Blood Donation, Group Size, Public Good, Pure Altruism, Behavioral Economics

When A+B < A: Cognitive Bias in Experts’ Judgment of Environmental Impact

When A+B < A: Cognitive Bias in Experts’ Judgment of Environmental Impact. Mattias Holmgren et al. Front. Psychol., May 29 2018, https://doi.org/10.3389/fpsyg.2018.00823

Abstract: When ‘environmentally friendly’ items are added to a set of conventional items, people report that the total set will have a lower environmental impact even though the actual impact increases. One hypothesis is that this “negative footprint illusion” arises because people, who are susceptible to the illusion, lack necessary knowledge of the item’s actual environmental impact, perhaps coupled with a lack of mathematical skills. The study reported here addressed this hypothesis by recruiting participants (‘experts’) from a master’s program in energy systems, who thus have bachelor degrees in energy-related fields including academic training in mathematics. They were asked to estimate the number of trees needed to compensate for the environmental burden of two sets of buildings: one set of 150 buildings with conventional energy ratings and one set including the same 150 buildings but also 50 ‘green’ (energy-efficient) buildings. The experts reported that less trees were needed to compensate for the set with 150 conventional and 50 ‘green’ buildings compared to the set with only the 150 conventional buildings. This negative footprint illusion was as large in magnitude for the experts as it was for a group of novices without academic training in energy-related fields. We conclude that people are not immune to the negative footprint illusion even when they have the knowledge necessary to make accurate judgments.

Individuals discredit issue polls that suggest their views are in the minority, and those with greater political knowledge and methodological knowledge displayed this bias more strongly

Communicating Public Opinion in Post-Fact Politics: Biased Processing of Public Opinion Reports and Potential Journalistic Correctives. Ozan Kuru, PhD Thesis, 2018. https://deepblue.lib.umich.edu/bitstream/handle/2027.42/143952/okuru_1.pdf?sequence=1&isAllowed=y …

ABSTRACT: People rely on polls and other representations of public opinion in the media to update their political cognitions and behaviors. However, individuals’ preexisting beliefs can color how they perceive opinion reports and lead them to cherry-pick evidence that is congenial when presented with multiple options. Such biases result in distorted perceptions of public opinion, declining trust in journalism, and political polarization. Moreover, in today’s unprecedentedly polarized and contentious information environment, individuals often encounter contradictory messages from digital data-journalism and numerical evidence is regularly critiqued, fact-checked, or debunked on reasonable or unreasonable grounds. In such a cacophonous context, individuals’ biases in information processing might amplify. Through three large national survey experiments and one smaller study, this dissertation examines how news consumers’ attributes, the content of opinion reports, and patterns of media coverage can trigger or mitigate biases in public perceptions. In the first part, I document that individuals process reports of public opinion in biased ways when they evaluate issue polls, election polls in competitive contexts, and diverse metrics of public opinion. I also show that their levels of knowledge and education moderate the extent of these biases. In the second part, I find that the corrective potential of three journalistic remedies to reduce these biases are minimal and contingent upon individuals’ education levels. I discuss implications for political polarization, trust in the press and representatives, and democratic politics at large.