Abstract
This study examined tendencies development of the self among Japanese in late adolescence and young adulthood, based on Kegan's constructive-developmental theory. Japanese versions of the Subject-Object Interview (SOI) and the Erikson Psychosocial Stage Inventory (EPSI) were administered to 40 late adolescents and 40 young adults (ages=25-35 years). Most participants were found to be at a transition between stages 3 and 4 of Kegan's structural-developmental stages. A positive relationship was found between age and Kegan's stage scores, and between Kegan's stage scores and the total as well as sub-scale scores for Industry and Identity on the EPSI. These results were discussed in terms of Kegan's views on development of the self and Erikson's views on identity development in late adolescence and young adulthood.
