Whereas the DM would predict stronger response on measures of stimulation and lower response on measures of sedation among heavier drinkers, the LLRM would predict lower response on both types of effects among heavier drinkers. We found clear support for this second DM prediction in that heavier drinkers reported greater stimulation, g = 0.45 (95% CI: 0.05, 0.86), but lower sedation, g = −0.40 (95% CI: −0.63, −0.18), across the BAC curve. The stimulation effect varied moderately across studies, Qwithin(7) = 18.62, p = .01, I2 = 62.40, whereas the sedation effect did not, Qwithin(6) = 3.92, p = .67, I2 = 0.00. Fail-safe N’s for the stimulation and sedation effects were 18 and 17, respectively.
