This study examined the relationship between personality traits and selective migration to the Tokyo metropolitan area, to explain the high extraversion and openness levels among urban residents. In Study 1, 247 undergraduates responded to a questionnaire encompassing a Big Five personality trait scale and their experience of moving to Tokyo to enroll in their university. Study 2 examined the relationship between personality traits and the experience of migration to the Tokyo metropolitan area using a large dataset of 18,665 Japanese adults. People who moved to the Tokyo metropolitan area from local areas reported higher openness levels. People who had lived in the Tokyo metropolitan area for a long time demonstrated as generally extroverted as people who moved there.
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