Cultural differences in daily emotions were investigated by administering emotion questionnaires four times a day throughout a one-week period. Respondents were American students, Japanese students living in the United States, and Japanese students living in Japan. Americans rated their emotional lives as more pleasant than did the Japanese groups. The dimension of emotional pleasantness (unpleasant-pleasant) was predicted better by interdependent than independent concerns in the Japanese groups, but this was not the case in the American group where the variance predicted by interdependent and independent concerns did not significantly differ. It is argued that cultural differences in the concerns most strongly associated with pleasantness are related to differences in ideals, norms, and practices of what it means to be a person. Cultural differences in the concerns are assumed to implicate differences in the nature of emotional experience.