participate in an alcohol challenge to evaluate their LR to alcohol. Subjects received oral alcohol (e.g., 0.75 ml/kg as a 20% solution with a sugar free carbonated beverage with a peak BAC of ~.06 g/dL) and a placebo session, with the drinks consumed over 10 minutes through a straw that passed through a 1 ml reservoir of absolute alcohol attached to a closed container (Mendelson et al., 1984; Schuckit and Gold, 1988; Schuckit and Smith, 1996). The intensity of their alcohol response was evaluated using their subjective feelings of intoxication, alcohol-related changes in cortisol, and alterations in body sway (e.g., Schuckit and Gold, 1988). The results of each test were converted to z-scores and combined into an overall LR based on the changes from baseline to the usual time of the peak BAC at about 60 minutes after drinking.
