memory: WAIS-III Arithmetic, WAIS-III Digit Span. The raw scores for all neurocognitive measures (except Luria-Nebraska Item 99 ratio) were converted to age-adjusted (e.g., Short Categories Test, Stroop Color-Word Test, WAIS-III subtests) or age-and-education-adjusted (e.g., Trails A and B via Heaton Compendium Norms (Heaton et al., 1991)) standardized scores. The standardized scores were then converted to z-scores for all measures. For the Luria-Nebraska Item 99 ratio, raw scores were converted to z-scores based on the performance of 27 non-smoking light drinking controls (Durazzo et al., 2012), since there are no published procedures available for this measure.
