As part of the Collaborative Study on the Genetics of Alcoholism (COGA) (Begleiter et al., 1995; Agrawal et al. , 2023), EEG data were collected from adolescent and young adult offspring of members of initially recruited subjects from families densely affected with AUD as well as community comparison families. In this study EEG coherence measures in the high alpha band (9-12 Hz.) from 27 coherence pairs were obtained from a sample of 1426 participants, children of the originally recruited sample, with 5006 assessments from ages 12 through 31 were included in the analysis. The sample and coherence measures were chosen to be those used in our recent papers on the genetic association of EEG coherence values and various PGS measures of psychiatric conditions (Meyers et al., 2019, 2021), partially to advance the understanding of the phenotypic characteristics of the measures analyzed in those works.