an effort to minimize age related differences in beta EEG genetic association findings. However, future studies should examine the effects of genetic variants on trajectories of beta EEG during development in order to delineate age-specific effects, and the links between these effects and/or the onset of psychopathology, such as AUD. Finally, the analytic software employed for this genome-wide analysis of family based samples (GWAF) does not currently allow for the analysis of sex chromosomes.