Title

Comorbidity Of Schizotypy And Psychopathy: Skin Conductance To Affective Pictures

Keywords

Electrodermal activity; Schizophrenia; Schizotypy; Self-centered impulsivity; Skin conductance; Violence

Abstract

Prior research indicates a relationship between psychopathy and schizophrenia, elucidating a specific trajectory toward violence. Recent research has suggested that this relationship exists at the nonclinical trait level of schizotypy; however, this finding has not been examined objectively. To explore this relationship using both subjective and objective measures, 54 undergraduates (50% male; mean age 20.41) who endorsed a wide range of schizotypy on the Schizotypal Personality Questionnaire (SPQ) completed a laboratory-based protocol. Participants viewed 15 pictures (five neutral, five threatening, and five of others in distress) from the International Affective Pictures System while electrodermal activity was recorded. As expected, all participants exhibited increased skin conductance levels (SCL) to threat and distress pictures compared to neutral pictures; however, no difference in SCL was found between threat and distress pictures. A unique relationship between psychopathy and schizotypy was found (i.e., schizotypy was related to higher Self-Centered Impulsivity and lower Fearless Dominance); however, schizotypy was related to increased SCL in response to emotional and neutral pictures. Although results do not support autonomic hyporesponsiveness often found in clinical psychopathy, a positive relationship was found between schizotypy and self-reported physical aggression. Findings highlight the need to examine other trajectories of violence within the schizophrenia spectrum disorders. © 2013 Elsevier Ireland Ltd.

Publication Date

12-30-2013

Publication Title

Psychiatry Research

Volume

210

Issue

3

Number of Pages

1000-1007

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.psychres.2013.07.027

Socpus ID

84888293637 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84888293637

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