A Multimethod Multitrait Validity Assessment of Self‐Construal in Japan,Korea, and the United States

A large number of previous studies have used self‐construal to predict communication outcomes. Recent evidence, however, suggests that validity problems may exist in self‐construal measurement. The current study conducted a multimethod multitrait (Campbell & Fiske, 1959) validation study of self‐construal measures with data (total N= 578) collected in Korea (N= 200), Japan (N= 212), and the U.S. (N= 166). The data showed that the Singelis (1994) Self‐Construal Scale, the Cross, Bacon, and Morris (2000) Relational Interdependent Self‐Construal Scale (RISC), and the Kuhn and McPartland (1954) Twenty Statements Test (TST) lacked convergent and discriminant validity, both pan‐culturally and within each of the three countries included in the study. Scores on the TST were not significantly related to scores on the self‐construal scales, and the various self‐construal measures correlated more highly with measures of communication directness than with alternative measures of the same type of self‐construal. Substantial method effects were also observed. The results were tested for both 2‐ and 3‐dimensional models of self‐construal and for refined scales and scales with all items retained. The results of all analyses were inconsistent with the claim that self‐construal measures are construct valid.