Neuropsychological and cognitive psychophysiological substrates of impulsive aggression

Ernest S. Barratt, Matthew S. Stanford, Thomas A. Kent, Alan Felthous

Research output: Contribution to journalArticlepeer-review

307 Scopus citations

Abstract

The purpose of this study was to test whether subjects who commit impulsive vs non-impulsive aggression differ on measurements of personality, neuropsychology, and cognitive psychophysiology, and whether these differences can yield information regarding the etiology of impulsive aggression. Subjects were two groups of prison inmates, distinguished by their committal of impulsive or nonimpulsive aggression, and matched noninmate controls. All inmates met DSM III-R criteria for an antisocial personality disorder but for no other disorder. Impulsiveness, anger, and peak P300 latencies did not differ between the inmate groups, but verbal symbol decoding and peak P300 amplitudes did. Impulsiveness and verbal skills were inversely correlated. Impulsiveness was inversely correlated with, and verbal skills positively correlated with P300 amplitudes. The results indicate that aggression is not homogenous, even among antisocial persons, and that impulsive aggression is related to neuropsychological and cognitive psychophysiological measures of information processing beyond those factors related to criminality alone.

Original languageEnglish (US)
Pages (from-to)1045-1061
Number of pages17
JournalBiological Psychiatry
Volume41
Issue number10
DOIs
StatePublished - May 15 1997

Keywords

  • P300 ERPs
  • antisocial personality disorder
  • impulsive aggression
  • prisoners
  • verbal deficits

ASJC Scopus subject areas

  • Biological Psychiatry

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