the salience and reward network [125]. Interestingly, the negative correlation between memory performance (working memory) and impulsivity observed in our study was also previously reported by other studies on individuals with substance use disorders [126,127]. Lastly, as expected, non-planning and motor impulsivity were positively correlated with each other [128], and both of these dimensions were shown to be associated with craving and relapse among alcohol-dependent males [129]. On the other hand, none of the correlations between the top predictor variables and age sustained a statistical significance after multiple testing corrections, suggesting that age did not impact the classification of groups based on these top predictors. However, it is suggested that future studies may confirm these preliminary findings using a large sample of subjects involving both males and females matched on multiple characteristics, such as education, ethnicity, premorbid IQ, etc.
