Resumen de Factor Structure and Reliability of the Japanese Version of the Young Schema Questionnaire Short Form

Fumiyo Oshima, Kazunori Iwasa, Hirofumi Nishinaka, Takanobu Suzuki, Saika Umehara, Itaru Fukui, Eiji Shimizu

• The Young Schema Questionnaire-Short Form (YSQ-SF) is one of the most widely used measures of individual early maladaptive schemas in schema therapy, and this study examined the factor structure and reliability of its Japanese version (YSQ-SF-J). We created a subsample to ensure the samples’ mutual independence (N= 248, mean age= 19.75; 121 females). Then, Japanese participants (N= 800) completed the Japanese-translated YSQ-SF. Participants were divided into 2 samples: Sample 1 (n= 700, mean age= 23.05; 350 females); and Sample 2 (n= 100, mean age= 20.27; 50 females) for test-retest reliability. Exploratory and confirmatory factor analyses revealed that the YSQ-SF-J’s item-factor structure was identical to the English version. Moreover, the scale showed good internal consistency and test-retest reliability. Results revealed the scale’s adequate psychometric properties. Thus, this study provided the first examples of empirical support for the YSQ-SF-J.