The current research applied a mid-level evolutionary theory that has been successfully employed across numerous animal species—life history theory—in an attempt to understand the Dark Triad personality trait cluster (narcissism, psychopathy, and Machiavellianism). In Study 1 (N = 246), a measure of life history strategy was correlated with psychopathy, but unexpectedly with neither Machiavellianism nor narcissism. Study 2 (N = 321) replicated this overall pattern of results using longer, traditional measures of the Dark Triad traits and alternative, future-discounting indicators of (...) life history strategy (a smaller-sooner, larger-later monetary dilemma and self-reported risk-taking behaviors). Additional findings suggested two sources of shared variance across the Dark Triad traits: confidence in predicting future outcomes and openness to short-term mating. (shrink)

1 Adaptationism is a research strategy that seeks to identify adaptations and the specific selective forces that drove their evolution in past environments. Since the mid-1970s, paleontologist Stephen J. Gould and geneticist Richard Lewontin have been critical of adaptationism, especially as applied toward understanding human behavior and cognition. Perhaps the most prominent criticism they made was that adaptationist explanations were analogous to Rudyard Kipling's Just So Stories. Since storytelling is an inherent part of science, the criticism refers to the acceptance (...) of stories without sufficient empirical evidence. In particular, Gould, Lewontin, and their colleagues argue that adaptationists often use inappropriate evidentiary standards for identifying adaptations and their functions, and that they often fail to consider alternative hypotheses to adaptation. Playing prominently in both of these criticisms are the concepts of constraint, spandrel, and exaptation. In this article we discuss the standards of evidence that could be used to identify adaptations and when and how they may be appropriately used. Moreover, building an empirical case that certain features of a trait are best explained by exaptation, spandrel, or constraint requires demonstrating that the trait's features cannot be better accounted for by adaptationist hypotheses. Thus, we argue that the testing of alternatives requires the consideration, testing, and systematic rejection of adaptationist hypotheses. Where possible, we illustrate our points with examples taken from human behavior and cognition. Key Words: adaptation; ADHD; brain allometry; constraint; epistemology; evolutionary psychology; exaptation; female orgasm ; optimization; special design; waist-hip ratio. Footnotes1 The authors contributed equally to this paper. Order of authorship was determined alphabetically. Correspondence may be addressed to any of the authors. (shrink)

THE FIRST EDITION of this book was based primarily on experience with adult male psychopaths hospitalized in a closed institution. Though a great many other psychopaths had come to my attention, most of the patients who were observed over years and from whom emerged the basic concepts presented in 1941 were from this group. During the next decade a much more diverse group became available. Female patients, adolescents, people who had never been admitted to a psychiatric hospital, all in large (...) numbers, became available for study and afforded an opportunity to observe the disorder in a very wide range of variety and of degree. This additional clinical experience, helpful comment in the reviews of the first edition, enlightening discussion with colleagues, and an improved acquaintance with the literature all contributed to modify concepts formulated approximately ten years earlier. In attempting to revise the book for the second edition (1950), I found it was impossible to do justice to the subject by minor additions, deletions, and modifications. It was necessary to write a new and much larger book. (shrink)

本书中,作者直接剖析了心理变态者,并提出了"其本质是什么"这一令人困扰的问题,揭开了心理变态者的神秘面纱.

Three studies examined Jones’(Perspectives onPsychological Science, 9, 445-451,2014) suggestion that psy-chopathic individuals use mimicry to avoid detection. In study1, student, community, and offender participants posed fearfulfacial expressions while looking at a prototypical fear face.Expressions were coded for facial movements associated withfear and were rated on genuineness by a separate sample ofundergraduates. Across samples, psychopathic traits were as-sociated with increased use of typical action units for fearfulfacial expressions and with genuineness ratings. In study 2,undergraduates completed the Psychopathic PersonalityInventory and told a (...) story about a time when they did some-thing that theyshouldhave felt remorseful for but did not.Factor 1 traits were found to positively relate to genuinenessscores given by a separate sample of undergraduates. Finally,in study 3, four videos of false remorse stories told by violentoffenders were rated by a sample of undergraduates. Thetwo high factor 1 videos received significantly highergenuineness ratings, supporting the relationship betweenfactor 1 and affective mimicry. Overall, findings suggestthat the psychopathic traits (specifically, factor 1) may beassociated with the ability to accurately mimic emotionalexpression (fear and remorse) leading others to perceiveemotional genuineness. (shrink)

Psychopaths routinely disregard social norms by engaging in selfish, antisocial, often violent behavior. Commonly characterized as mentally disordered, recent evidence suggests that psychopaths are executing a well-functioning, if unscrupulous strategy that historically increased reproductive success at the expense of others. Natural selection ought to have favored strategies that spared close kin from harm, however, because actions affecting the fitness of genetic relatives contribute to an individual’s inclusive fitness. Conversely, there is evidence that mental disorders can disrupt psychological mechanisms designed to (...) protect relatives. Thus, mental disorder and adaptation accounts of psychopathy generate opposing hypotheses: psychopathy should be associated with an increase in the victimization of kin in the former account but not in the latter. Contrary to the mental disorder hypothesis, we show here in a sample of 289 violent offenders that variation in psychopathy predicts a decrease in the genetic relatedness of victims to offenders; that is, psychopathy predicts an increased likelihood of harming non-relatives. Because nepotistic inhibition in violence may be caused by dispersal or kin discrimination, we examined the effects of psychopathy on (1) the dispersal of offenders and their kin and (2) sexual assault frequency (as a window on kin discrimination). Although psychopathy was negatively associated with coresidence with kin and positively associated with the commission of sexual assault, it remained negatively associated with the genetic relatedness of victims to offenders after removing cases of offenders who had coresided with kin and cases of sexual assault from the analyses. These results stand in contrast to models positing psychopathy as a pathology, and provide support for the hypothesis that psychopathy reflects an evolutionary strategy largely favoring the exploitation of non-relatives. (shrink)

Psychopathy represents a unique set of personality traits including deceitfulness, lack of empathy and guilt, impulsiveness, and antisocial behavior. Most often in the literature, psychopathy is described as pathology — a disorder that has been linked to a variety of biological deficits and environmental risk factors. However, from an evolutionary perspective, psychopathy, while it could be a disorder, has been construed in the context of an adaptive strategy. In this article we will examine the strengths and weaknesses of two models (...) suggesting that psychopathy is an adaptive strategy, and one model suggesting that it is a form of pathology resulting from accumulated mutations. Overall, we do not find that there is strong enough evidence to draw firm conclusions about one theory over another, but we highlight some areas where future research may be able to shed light on the issue. (shrink)