2003 年 10 巻 1 号 p. 11-24
This study was conducted to help clarify the relationships between the three components of the triangular theory of love (intimacy, passion, and commitment) and several aspects of intimate opposite-sex relationships (among them, behaviors and self-perceptions). In Study 1 (N=449), the Triangular Love Scale (TLS) was translated into Japanese, and the results of factor analysis revealed that several items loaded on more than one factor as found in previous researches. Thus, factor analysis was conducted again while multiple loading items were eliminated, and the results showed that the TLS containing 27 items (TLS27) formed 3 factors, which were in accordance with the theory. The results also revealed that (1) the closer the relationships were, the higher the scores on the TLS27 became, (2) the subjects reporting unrequited love had high scores on passion, as well as (3) high scores on all components of love related to the behavioral aspects of the relationships. The results of Study 2 (N=460) supported the stability of the factor structure of TLS27 obtained in Study 1. The results of a confirmatory factor analysis also supported the multidimensional 3 factor structure of TLS27 rather than a unidimensional structure. In addition, self-perceptions of participant's closest opposite-sex relationships were influenced by intimacy and passion. Especially in the case where intimacy was high, self-perceptions of the relationships were generally positive. Results were discussed in terms of the validity and future perspectives of the triangular theory of love.