Abstract
The RAS is a popular scale developed by Rathus for the measurement of "assertiveness behavior". The purpose of the present article was to describe a Japanese version of the Rathus assertiveness schedule (RAS) and to evaluate its factor structures. The original scale was translated into Japanese along with back-translation and its validity was examined in 103 nursing students. The Japanese version of the RAS indicated high coefficients of reliabilities in a test-retest reliability test(r=0.86 p<0.01) and a split-half reliability test ( r=0.72〜0.80 p<0.01). The coefficient of reliability of Cronback's alpha for the Japanese version (r=0.82〜0.84 p<0.01) indicated a high internal consistency. Seven factors were extracted by using factor analysis in principal factoring with a varimax rotation, so the Japanese scale had a few implicative differences from the original RAS, but its validity was suggested to be high.
