(for detail, see Dom et al. (2007), and 2) age as a factor could have moderated the performance-related impulsivity (more than the trait impulsivity) resulting in a differential effect of younger controls with higher impulsivity as equated with relatively lower impulsivity in older alcoholics (i.e. higher the age lower the impulsivity). Future studies may address this issue of age effects on impulsivity. Finally, since the concepts of impulsivity, disinhibition and risk propensity forms the vulnerability not only for substance use disorders but the entire rubric of disinhibitory or externalizing psychopathology (Krueger et al., 2002; Iacono et al., 2008), ERP studies on reward processing using a gambling paradigm on a wide spectum of disorders may help integrate the relationship among these concepts and yield a comprehensive model for disease propensity.
