Abstract
This study developed a Japanese version of the Ten-Item Personality Inventory (TIPI-J) and examined its reliability and validity. The participants were 902 Japanese undergraduates (376 males, 526 females). They completed the TIPI-J and one of the other Big-Five scales: Big Five Scale (BFS; Wada, 1996); Five Factor Personality Questionnaire (FFPQ-50; Fujishima et al., 2005); BFS short version (Uchida, 2002); Big Five (Murakami & Murakami, 1999); or the NEO-FFI (Shimonaka et al., 1999). The TIPI-J was administered again two weeks later to 149 participants to determine test-retest reliability. Also, 31 pairs of participants rated their self-image and the other-image using the TIPI-J to explore the relationship between self-rated and friend-rated TIPI-J scores. The results generally supported the reliability and validity of the TIPI-J.