Physical Abuse Explains Sex Differences in the Link Between Psychopathy and Aggression

Area of Science:

• Forensic Psychology
• Clinical Psychology
• Criminology

Background:

• Psychopathy is linked to aggression, but sex differences and environmental moderators are understudied.
• Lifetime physical abuse (LPA) is a significant environmental factor associated with aggression in both sexes.

Purpose of the Study:

• To investigate sex differences in how psychopathy facets predict physical, verbal, and indirect aggression.
• To examine if LPA moderates the relationship between psychopathy facets and aggression types in men and women.

Main Methods:

• Assessed psychopathy (4-facet model), LPA, and aggression in a community sample of 369 men and 204 women.
• Utilized the Psychopathy Checklist: Screening Version, Addiction Severity Index (for LPA), and Aggression Questionnaire.

Main Results:

• Physical aggression linked to affective psychopathy, moderated by LPA differently in men and women.
• Verbal aggression associated with antisocial psychopathy and LPA in men only.
• Indirect aggression linked to antisocial psychopathy (men) and interpersonal psychopathy (women), not moderated by LPA.

Conclusions:

• LPA and psychopathy interact to influence specific aggression types, with distinct patterns observed between sexes.
• Low antisocial psychopathy and absence of LPA appear protective against indirect aggression in women.
• Findings underscore the need for sex-specific interventions addressing unique risk factors for aggression.