Marshall, J., Watts, A. L., & Lilienfeld, S. O. (2018). Do psychopathic individuals possess a misaligned moral compass? A meta-analytic examination of psychopathy’s relations with moral judgment. Personality Disorders: Theory, Research, and Treatment, 9(1), 40-50.
http://dx.doi.org/10.1037/per0000226
Abstract: Psychopathic individuals are often characterized as lacking a moral sense. Although this hypothesis has received ample experimental attention over the past decade, findings have been inconsistent. To elucidate the relationship between psychopathy and abnormal moral judgment, we conducted a meta-analysis of the research on psychopathy and morality-related variables (k = 23, N = 4376). A random effects model indicated a small but statistically significant relation between psychopathy and moral decision-making (rw = .16) and moral reasoning (rw = .10) tasks. These results reveal at best modest support for the common perception that psychopathic individuals fail to understand moral principles. A secondary meta-analysis (k = 9, N = 4294) of the growing body of literature on the relationship between psychopathy and moral reasoning on moral foundations measures provides preliminary evidence that psychopathic individuals may possess a differential set of “moral taste buds” than less psychopathic individuals. We discuss the implications of the results from both meta-analyses for models of the etiology of psychopathy and the criminal responsibility of psychopathic individuals.
Baloney. I know what is morally wrong and my judgements are about on a par with most people's ideas. The only difference is that, if I do something I know is morally wrong, I don't really care. I've done things I know are objectively "wrong" but I'm not at all bothered. I don't need to rationalize and persuade myself that it was right. I know it was wrong. But I wanted to do it so I'm cool with it.
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