Repeated assessments of subjective states by the Biphasic Alcohol Effects Scale68 and the Drug Effects Questionnaire69 comprised the main dependent subjective measures. The Biphasic Alcohol Effects Scale has shown good reliability and validity and yields 2 subscales, stimulation and sedation, shown to correspond to alcohol effects often observed on ascending and descending BrAC, respectively.68 As validated in a previous report,70 we modified the original Biphasic Alcohol Effects Scale instructions so as not to divulge beverage contents, and we administered the scale at predrink baseline. The Drug Effects Questionnaire consisted of 100-mm visual analog scales for the following postbeverage ratings: feel drug: “do you feel any drug effects?”; like: “do you like the effects you are feeling now?”; and want more: “would you like more of what you consumed, right now?”
