Unfortunately, comparisons across studies and interpretations of the overall pattern of data are made difficult by the fact of between-study discrepancies in test batteries and definitions of neuropsychological domains, as well as by differences in sample demographic and clinical characteristics (e.g., treated vs. treatment naïve, age at testing, years of education, race, socio-economic status, and presence of psychiatric comorbidities). Furthermore, due to the interactive effects of other SUDs (cannabis and stimulant use, for example, also predict attentional difficulties), poorer neuropsychological performance cannot exclusively be attributed to alcohol consumption.
