Men (n = 47) who met inclusion criteria were invited to participate individually in two test sessions, approximately 1 week apart, which consisted of baseline evaluations and subsequent challenges with placebo and ethanol. Of the original 47 participants 38 records were still available on readable media in order to be used in the present analyses. Participants were instructed not to use alcohol or any other drugs for 3 days prior to testing. On both test days, each man arrived at the laboratory at approximately 8:00 A.M. after fasting overnight and was provided a standardized low-fat breakfast. Baseline measurements were taken and at about 9:00 A.M., a placebo or ethanol beverage was administered in random order, using a placebo ethanol administration device (Mendelson et al., 1984). The ethanol beverage was 0.75 ml/kg of 95% ethanol (0.56 g/kg) as a 20%-by-volume solution in a caffeine-free and sugar-free soda. The placebo beverage was made using the same mixer with 3 ml of 95% ethanol floated on top. Subjects were instructed to drink at a steady pace and to consume the beverage over 7
