The present study had four purposes. (1)To examine whether Weiner's attribution theory is applicable to the Japanese people. (2)To examine whether sex differences of the attribution style be observed in the interpersonal situation. (3)To testify that the differences in causal attribution style be more efficiently explained by <sex-roles>___- than <sex>___- itself. (4)To justify the correlation between masculinity and masculine-typed discipline as well as femininity and feminine-typed one. Subjects were 63 male and 62 female college students and were answered a questionnaire composed of three parts-of the attribution style, of degree of sex difference, and of sex-differentiated discipline. The results were as follows : (1)The attribution style categorized as "relational" was clearly observed. (2)Sex differences in the attribution style were distinctly observed in the interpersonal situation. (3)The differences in the attribution style were more clearly explained by <sex-roles>___- differences than <sex>___- differences. (4)The significant positive correlation between masculinity and masculine-typed discipline was obtained. No "significant" correlation was obtained between femininity and feminine-typed discipline.
