also examined. We predicted that participants with the 118G variant would show higher self-administration and greater hedonic responses during self-administration relative to AA homozygous participants. We also anticipated that, irrespective of genotype, greater perceived stimulant effects and lower perceived sedative effects would correlate with greater self-administration. To provide a developmental context and reduce potential confounds related to drinking histories, we focused on a narrow age range (19–21 years) approximating the peak age of onset for alcohol use disorders (Li et al., 2004).
