An electrocortical correlate of a history of alcohol abuse in criminal offenders

Abstract

This study tested the hypothesis that a history of chronic alcohol abuse is the key variable underlying the previously reported association between criminal recidivism, impulsivity and differentiation of the Go/NoGo contingent negative variation (CNV). Forty male Singaporean prison inmates were assessed for presence of antisocial personality disorder (APD), a history of alcohol and other substance abuse, and psychopathy. CNV was recorded in the Go/NoGo paradigm in groups comprising inmates with (ALC+: N = 29) and without (ALC?: N = 11) a history of alcohol abuse. As predicted, the ALC+ group showed significantly degraded Go/NoGo CNVs (poor differentiation). This suggests that the “high risk” group of mentally disordered found to recidivate in studies by Howard and Lumsden (1996; 1997) may have shared a history of alcohol abuse. Results are discussed in the context of a developmental biopsychosocial model of risk for engaging in criminal behaviour.