Decision making and impulsiveness in abstinent alcohol-dependent people and healthy individuals: A neuropsychological examination

Abstract

Background: Alcohol dependence is associated with deficits in decision making and increased impulsiveness. Therefore, we compared decision making in abstinent alcohol-dependent people ("abstainers") and matched healthy individuals ("comparison group") to determine whether impulsiveness or personality traits play a role in decision making. Methods: Abstainers (n=40) were recruited from treatment facilities in and around Munich, Germany, and the comparison group (n=40) through personal contacts and social media. We assessed decision making with the Iowa Gambling Task (IGT), impulsiveness with the Barratt Impulsiveness Scale (BIS-11) and personality traits with the NEO Five-Factor Inventory (NEO-FFI). Results: The comparison group performed significantly better in the IGT (mean profit € 159.50, SD 977.92) than the abstainers (mean loss - € 1,400.13, SD 1,362.10; p