Abstract
Background
Previous research has consistently shown value in studying emotion processing with psychopathy, but the relative effect of aural and visual stimulation has hardly been considered.
Aims
Our aims were to (1) compare reaction time and self-rated valence ((un)pleasantness), arousal and sense of being dominated by affective sounds or visual images among offenders with and without psychopathy (=/>26) on the psychopathy check-list revised; (2) investigate any associations, controlling for social desirability and depression; (3) explore the possible mediating effect of criminogenic cognitions on any relationships between psychopathy and emotional responses to affective stimuli.
Methods
Professional educators invited all male offenders serving semi-open custody sentences in one prison to participate. After a semi structured interview to assess psychopathy, they self-reported on criminogenic cognition, depression and social desirability scales, before a computer task using standardised human and animal sounds and images. Using the self-assessment manikin, participants rated the emotional valence, arousal and dominance levels when pleasant, unpleasant and neutral sounds or images were presented.
Results
About one in three prisoners completed all the ratings—120 men, of mean age 38.8 years (SD = 11.06). All had shorter reaction times to sounds than images. Offenders with high affective-interpersonal factor scores rated all types of sounds as less pleasant. Men with high psychopathy scores took longer to respond to unpleasant images than those with lower scores. There was a positive relationship between psychopathy factors and criminogenic cognitions and the external locus of criminogenic cognitions mediated the relationship between psychopathy facets and emotional responses of valence to pleasant sounds.
Conclusion
Our findings confirm the potential importance of emotional reactions to sounds as well as images among men with psychopathy. Given the shorter reaction times to sounds, in real life sounds could prove more provocative than images. While only small differences emerged between men above and below the PCL-R threshold, indications from facet analyses suggest that further study of sound stimuli could enhance the understanding of emotional response differences to inform interventions. Future research in this area should focus on human-related stimuli and add alexithymia measures.