Psychopathic Traits in Forensic and Community Samples: Evidence From Portugal Using the Self-Report Psychopathy Scale...

Area of Science:

• Psychology
• Criminology
• Forensic Science

Background:

• Psychopathy is a complex personality construct with implications for criminal behavior.
• Understanding the prevalence and expression of psychopathic traits in different populations is crucial for effective interventions.

Purpose of the Study:

• To compare the prevalence and expression of psychopathic traits in Portuguese prisoners versus community members.
• To evaluate the discriminant validity of the abbreviated Self-Report Psychopathy Scale (SRP-SF).

Main Methods:

• A sample of 766 participants (prisoners and community members) completed the SRP-SF.
• Statistical analyses were used to compare psychopathy levels across groups and sexes.

Main Results:

• Prisoners showed significantly higher psychopathy levels across all four facets compared to community members.
• Males scored higher in all facets. An interaction effect was found in the affective facet, with female prisoners showing levels similar to male prisoners.
• 31.4% of inmates scored high on psychopathy (≥70) versus 2.2% in the community.

Conclusions:

• The findings support a dimensional view of psychopathy.
• The SRP-SF demonstrates utility for forensic screening and differentiating between incarcerated and non-incarcerated individuals.
• Results have implications for forensic assessment, prison-based interventions, and community prevention strategies.