Mean ratings of euphoria, anxiety, dizziness, and sociability after MDMA or placebo, by genotype (AA: N = 10; AG: N = 30, GG: N = 28). AUC was calculated using the change from precapsule. Bars depict mean ± SEM. * indicates significant difference between A/A and A/G; # indicates significant difference between A/A and G/G, p < 0.05.