Antisocial behaviour and psychopathy: Uncovering the externalizing link in the P3 modulation
Abstract
HIGHLIGHTSP3 amplitude is reduced in antisocial behaviour.P3 blunted amplitude is mainly predicted by impulsive‐antisocial psychopathic traits in cognitive tasks.P3 enhanced amplitude is mainly predicted by interpersonal‐affective facets in cognitive tasks.P3 reduced amplitude is mainly predicted by interpersonal‐affective facets in emotional‐affective tasks.P3 amplitude as a neurobiological marker of externalizing dimensions of psychopathology. ABSTRACT In 2009, Gao and Raine's meta‐analysis analysed P3 modulation over the antisocial spectrum. However, some questions remained open regarding the P3 modulation patterns across impulsive and violent manifestations of antisocial behaviour, phenotypic components of psychopathy, and P3 components. A systematic review of 36 studies was conducted (N = 3514) to extend previous results and to address these unresolved questions. A clear link between decreased P3 amplitude and antisocial behaviour was found. In psychopathy, dimensional approaches become more informative than taxonomic models. Distinct etiological pathways of psychopathy were evidenced in cognitive tasks: impulsive‐antisocial psychopathic traits mainly predicted blunted P3 amplitude, while interpersonal‐affective psychopathic traits explained enhanced P3 amplitude. Supporting the low fear hypothesis, the interpersonal‐affective traits were associated with reduced P3 amplitude in emotional‐affective learning tasks. From the accumulated knowledge we propose a framework of…
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