Two hundred eighty-two students at Arizona State University in the U.S. and 339 students at Okayama University in Japan completed a questionnaire on their alcohol use, expectancies of the effects of alcohol on their own and others' moods and behaviors, the desirability of these effects, norms of significant others for levels of alcohol use and the subject's desire to comply with these norms, and reasons for drinking and not drinking alcohol. Although frequencies of current drinkers versus abstainers did not differ between the two samples, the U.S. students began regular alcohol use at a significantly earlier age, currently drank more alcohol, had higher alcohol expectancies for emotional responses, and endorsed more celebratory reasons for drinking than their Japanese counterparts. U.S. students, however, had lower expectancies for flushing and lower perceived norms for drinking. Hierarchical multiple regressions performed using data from the current drinkers indicated that expectancies of disinhibition and especially aggressiveness after alcohol use, alcohol norms, celebratory (but not pathological) reasons for drinking, and reasons for not drinking were more predictive of reported levels of alcohol use among the U.S. students as compared with the Japanese students.