Abstract
The purpose of this study was to develop a “Social Adjustment Disorder Inventory” clarifying whether social behavior disorder is a problem affecting day-to-day emotions/behavior, and to examine its reliability and validity. Four hundred and fifty-one families having individuals with traumatic brain injury were asked to complete a questionnaire. Results of factor analysis and confirmatory factor analysis revealed that this inventory contained 36 items comprising 6 factors, including “egocentrism/reduced control of emotion,” “decreased independence,” “difficulty in mutual understanding,” “memory deficit,” “depression,” and “difficulty in recognition of surroundings.” The reliability of this inventory was investigated using Cronbach’s α statistics, and its validity was investigated through content validity and correlation with FIM/FAM. The results of this study indicated that this inventory has high reliability and validity.