After signing informed consent, subjects began baseline screening. Eligible participants were scheduled for three separate test days a minimum of three days apart under double-blind conditions in randomized order. Participants were told they would receive ethanol on two of the three test days. Test days included high concentration ethanol (targeted breath alcohol concentration [BrAC] = 100mg%), low concentration ethanol (target BrAC= 40mg%) or placebo, within-subjects. Participants fasted overnight before each session. They reported to the Biological Studies Unit at VA Connecticut Healthcare System, West Haven campus, at 9:00am each test day. Before testing, participants underwent urine drug and breathalyzer screening. Participants were tested for cannabis, barbiturates, benzodiazepines, cocaine, opiates and methadone. After all tests returned negative, an IV line was placed. Participants were then given a light breakfast. See Kerfoot et al. (2013) for further detail regarding procedures.
