In addition, several scales were employed during the bar-lab setting to identify effects of naltrexone based on OPRM1 and DAT genes on acute alcohol effects and craving: the Biphasic Alcohol Effects Scale (BAES) (Martin et al., 1993), Subjective High Assessment Scale (SHAS); (Schuckit, 1984), and Alcohol Urge Questionnaire (AUQ) (Bohn et al., 1995).