The inclusion criterion for all NAC was a lifetime drinking average of less than 30 standard drinks per month, with no periods of drinking more than 60 drinks per month. Exclusion criteria for all participants were: 1) lifetime or current diagnosis of schizophrenia or schizophreniform disorder using the computerized Diagnostic Interview Schedule (Bucholz, Robins et al. 1991; Levitan, Blouin et al. 1991; Erdman, Klein et al. 1992; Robins, Cottler et al. 1998), 2) history of lifetime or current drug abuse or dependence (other than nicotine or caffeine), 3) significant history of head trauma or cranial surgery, 4) history of significant neurological disease, 5) history of diabetes, stroke, or hypertension that required an emergent medical intervention, 6) laboratory evidence of hepatic disease, or 7) clinical evidence of Wernicke-Korsakoff syndrome.
