抄録
Individuality Based Identity Scale (IBIS) and Relatedness Based Identity Scale (RBIS) were developed. In Study 1, adults and adolescents (N = 521) responded to items based on definitions following Josselson (1992, 1994), Okamoto (1997, 2007), and Yamamoto (1989). Then, factor analysis was conducted on the responses made by participants, which identified 14 factors comprised of 85 items. The study also established the reliability of the 85-items prototype scale (α =.66〜.94). In Study 2, the newly developed scales, the Identity Scale, the Fulfillment Sentiment Instrument and the Ito Sex Role Scale were administered to adults and adolescents (N = 315). Results indicated the validity of the IBIS and RBIS that consisted of 13 factors and 81-items, after dropping one factor with unconfirmed validity. Short versions of IBIS and RBIS consisting of 52-items were developed.
