Psychopathic Personality Traits and Somatization: Sex Differences and the Mediating Role of Negative Emotionality

Although a number of investigations have provided evidence for an association between antisocial personality disorder and somatization disorder, the variables underlying this association remain unknown. We examined the relations among measures of primary and secondary psychopathy, somatization, and negative emotionality (NE) in 150 undergraduates. Somatization was positively and significantly correlated with measures of secondary, but not primary, psychopathy, and the relations between secondary psychopathy indices and somatization tended to be significantly stronger in females than in males. Some support was found for the hypothesis that the association between secondary psychopathy and somatization is mediated by NE, but not for the hypothesis that low levels of behavioral inhibition lead to somatization. Although the present findings are consistent with the possibility that somatization is a sex-differentiated manifestation of secondary psychopathic traits, replication of these findings in clinical samples will be necessary.