When possible, we coded subjective response measures as assessing either stimulation or sedation. We based coding in part on a recent factor analytic study of measures of subjective alcohol response, which empirically differentiated measures of sedation from measures of stimulation (Ray et al., 2009). Sedation measures included the SHAS, BAES Sedation subscale, and ARCI Pentobarbital-Chlorpromazine-Alcohol Group subscale. Stimulation measures included the BAES Stimulation subscale, POMS Vigor subscale, and ARCI Amphetamine subscale. Eight samples (25% of the included samples) exclusively used measures that could not be coded as assessing either stimulation or sedation (e.g., how impaired do you think you are at present?). These samples were therefore excluded from all analyses limited to stimulation or sedation.
