The Posttraumatic Growth Inventory (PTGI) was translated into Japanese and its reliability and validity was examined. Female undergraduate and junior college students (N=252) completed a questionnaire and valid data were obtained from 213 of these participants. Factor analysis with varimax rotation was performed and the correlation coefficient between PTGI and several scales was calculated to examine the validity of the scale. Major findings were as follows,(1) The Japanese version of PTGI consisted of two factors:(a) Realization of situation surrounding the self and (b) Discovery and certainty of self-competence.(2) The Japanese version of PTGI was unrelated to social desirability and neuroticism. The scale was positively correlated with optimism, extraversion, openness to experience, conscientiousness, and agreeableness.(3) The Reliability of the scale based on internal consistency was satisfactory
