Development and Validation of the Japanese Version of Social Phobia Scale and Social Interaction Anxiety Scale

  • Kanai Yoshihiro
    Graduate School of Nursing and Social Services, Health Sciences University of Hokkaido
  • Sasagawa Satoko
    Graduate School of Human Sciences, Waseda univerdity:Research Fellow of the Japan Society for the Promotion of Science
  • Chen Junwen
    Faculty of Human Relations, Tokai Women's University
  • Suzuki Shin-ichi
    Training and Research Center for Clinical Psychology, Graduate School of Education, Hiroshima University
  • Shimada Hironori
    School of Human Sciences, Waseda University
  • Sakano Yuji
    School of Psychological Science, Health Sciences University of Hokkaido

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Other Title
  • Social Phobia Scale と Social Interaction Anxiety Scale 日本語版の開発
  • Social Phobia Scale ト Social Interaction Anxiety Scale ニホンゴバン ノ カイハツ

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The purpose of this study was to develop and validate the Japanese version of Social Phobia Scale (SPS) and Social Interaction Anxiety Scale (SIAS). The SPS assesses fear of being scrutinized during performance in the presence of others, while the SIAS assesses fear of social interaction. Six-hundred and fifteen undergraduate students and 21 outpatients with soclal phobia completed the SPS and the SIAS. Exploratory factor analysis revealed that the SPS included 20-items loading on one factor, which was named "Fear of being scrutinized" and the SIAS included 20-items loading on two factors, which were named "Soclal interaction anxiety" and "Deficit of _self-efficacy In social interactive situation". Internal consistency of both scales were sufficiently high (SPS : α=0.91. SIAS : α=0.72-0.92) . Results of t test revealed that patients with social phobia showed higher scores than undergraduate students for both scales. Therefore, it was concluded that the SPS and the SIAS have high discriminant validity. The SPS and the SIAS correlated moderately with other self-report measures of social anxiety. Furthermore, the SPS and the SIAS predicted anxious response to speech situations. It was suggested that the SPS and the SIAS have high validity and potential for clinical and research application. Finally, the efficacy of these scales for evaluating subtypes of social phobia was discussed.


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