Objective: The Social Provisions Scale is one of the most widely used measures of perceived social support. Our aim was to develop and validate the Japanese version of the 10-item Social Provisions Scale (SPS-10) to be able to evaluate the social support of individuals easily in Japan.
Results: The English version of the SPS-10 questionnaire was translated to Japanese and cross-culturally adapted. The SPS-10 Japanese version was administered to 72 mothers (age, mean ± standard deviation, 55.1 ± 6.7 years) of patients with eating disorders. The construct validity of the SPS-10 Japanese version was examined by comparing their scores with the scores on other scales: Pearson’s correlation coefficient was -0.79 with the UCLA Loneliness Scale, -0.44 with the Beck Depression Inventory, and -0.39 with the K6. Cronbach’s α as a measure of internal consistency was good at 0.89. Structural validity was tested using confirmatory factor analysis. The confirmatory factor analysis model showed satisfactory goodness-of-fit indices except for RMSEA (CFI=0.894, GFI=0.871, AGFI=0.716, RMSEA=0.14). All items had high loadings on the respective factors, ranging from 0.48 to 0.88. Our findings supported the construct validity, structural validity, and reliability of the SPS-10 Japanese version in Japanese people as a measure of social provisions.