The underlying factor structure of the B-BAES was tested with confirmatory factor analysis using AMOS 16.0 (Arbuckle, 2005). Replicating previous analyses with the full BAES (Earleywine and Erblich, 1996; Rueger et al., 2009), four competing models were tested using the B-BAES at the ascending and descending limbs. Model One (Four-Factor) examined the theoretically-predicted model of stimulant and sedative effects of alcohol as distinct constructs on the ascending (30 min) and descending (120 min) limbs (Newlin and Thomson, 1990). This model supports the biphasic nature of alcohol’s stimulant and sedative effects by modeling the potential for distinct and higher stimulant effects at the ascending limb relative to the descending limb, and distinct and higher sedative effects at the descending limb relative to the ascending limb. Model Two (Two-Factor, Limb) examined the B-BAES items as representing subjective alcohol effects at the ascending and descending limbs, irrespective of the nature of the effect (i.e., stimulation or sedation). Model Three (Two-Factor, Effect) examined the B-BAES items as representing distinct stimulant and sedative effects of alcohol, irrespective of the BrAC limb. Model Four (One-Factor) examined
