Participants were individuals with both genotype data (i.e., saliva samples suitable for DNA extraction) and non-missing phenotype data (N = 428) drawn from a larger experimental study investigating the acute effects of alcohol on measures of executive cognitive functioning. Participants were regular drinkers (i.e., consuming between 2–25 drinks per week on average) recruited from the Columbia, MO community. Inclusion criteria based on drinking habits ensured that the alcohol dose received in the study was comparable to participants’ typical drinking experiences. Therefore, naïve drinkers (< 2 drinks per week on average) and very heavy drinkers (≥ 25 or more drinks per week on average) were excluded from the study. Additional exclusion criteria included the endorsement of any condition contraindicated with alcohol administration (abstention; history of alcohol or drug abuse treatment or other serious mental or physical illness; deliberate attempts to cut down on drinking; prescription medication other than oral contraception; pregnancy) or that would prevent the successful completion of laboratory measures (color-blindness; a primary language other than English). Exactly half of the sample was male (n = 214), with an average
