Self-completed Occupational Performance Index (SOPI)
Official website of SOPI
Established and maintained by Tadanori Imai, developer of SOPI.
自記式作業遂行指標(SOPI)公式サイト
A brief self-completed measure developed in the field of occupational therapy for assessing participation in meaningful everyday occupations
作業療法分野で開発された,
意味のある日々の作業への参加を簡便に評価する
9項目の自己記入式尺度
SOPI assesses participation in meaningful everyday occupations from the individual's perspective. It evaluates participation across three occupational domains—leisure, productivity, and self-care—and three dimensions: occupational control, occupational balance, and satisfaction with occupational performance.
This website serves as the official information resource for SOPI. It provides up-to-date information on the concept, development, administration and scoring, downloadable materials, translations, and related research.
SOPI is designed to assess occupational participation in meaningful everyday occupations. It focuses not only on whether people engage in activities, but also on how they perceive their participation in daily life.
SOPI consists of 9 items and can be completed by individuals themselves. It is suitable for use in research, clinical practice, education, and outcome evaluation.
SOPI evaluates occupational participation through three occupational domains—leisure, productivity, and self-care—and three aspects—control, balance, and satisfaction.
SOPI was developed through empirical research and has been used in studies related to occupational participation, health-related quality of life, well-being, depression, social participation, rehabilitation, and aging.
Free to use for research, practice, and education|研究・実践・教育目的で無料利用可能
The Japanese version of SOPI is available free of charge for academic research, clinical practice, and educational purposes. When using SOPI in research or publications, please cite the original article appropriately.
Learn about the conceptual background, development, and structure of SOPI, including its focus on occupational participation in meaningful everyday occupations.
Find information on how to administer SOPI, calculate scores, and interpret the results in research, clinical practice, education, and outcome evaluation.
Access the Japanese version of the SOPI questionnaire and information on use conditions, citation, and free use for academic research, clinical practice, and education.
View the original article and related studies using SOPI in occupational therapy, occupational science, rehabilitation, aging, health-related quality of life, well-being, depression, and social participation research.
Ikigai-9 is a brief 9-item measure developed in Japan to assess the sense of ikigai. SOPI and Ikigai-9 can be used complementarily in research and practice related to occupational participation, well-being, aging, rehabilitation, and quality of life.