Analyses of the 204 genes in our set of endophenotype-general candidate genes produced one association that survived Bonferroni correction (α = 2.45 × 10−4): GABRA1, which encodes the α1 receptor for GABA, was associated with delta power, p = 2.33 × 10−4. GABRA1 has been associated with several drinking-related behaviors and consequences in the COGA sample (Dick, Plunkett, et al., 2006). Association results for all EEG measures are presented in Tables S16 to S22. Analyses of 92 genes in our set of schizophrenia endophenotype candidate genes are presented in Tables S23 to S28. None of the genes was associated with any EEG endophenotype at a level that survived Bonferroni correction (α = 5.43 × 10−4).