Facets of psychopathy, heart rate variability and cognitive function

Area of Science:

• Psychology
• Forensic Psychology
• Neuroscience

Background:

• Psychopathy is a personality construct characterized by distinct interpersonal, affective, lifestyle, and antisocial facets.
• Understanding the underlying physiological and cognitive mechanisms associated with these facets is crucial for assessment and intervention.
• Previous research has explored links between psychopathy and various biological and cognitive factors, but facet-specific associations require further investigation.

Purpose of the Study:

• To examine the relationship between the four facets of the Hare Psychopathy Checklist-Revised (PCL-R) and physiological measures (heart rate variability and heart rate).
• To investigate the association between PCL-R facets and cognitive functions, specifically performance on a continuous performance test (CPT) and a working memory test (WMT).

Main Methods:

• Fifty-three male prisoners were assessed using the Hare Psychopathy Checklist-Revised (PCL-R).
• Physiological responses were measured via heart rate variability (HRV) and heart rate (HR) during baseline, cognitive tasks, and recovery periods.
• Cognitive functions were evaluated using a continuous performance test (CPT) and a working memory test (WMT).

Main Results:

• The interpersonal facet of the PCL-R significantly explained variance in HRV and HR across baseline and cognitive tasks.
• Higher scores on the interpersonal facet were associated with better performance on cognitive tests.
• The antisocial facet explained a smaller proportion of variance, primarily during baseline conditions.

Conclusions:

• The findings suggest that different facets of psychopathy are differentially associated with physiological and cognitive mechanisms.
• The interpersonal facet appears particularly linked to autonomic nervous system activity and executive functions.
• These facet-specific associations may inform more nuanced understanding and treatment approaches for psychopathy.