Abstract
While assistance to help independence of individuals with mental disorders is promoted, the International Classification of Functioning,Disability and Health (ICF), which was released in 2001, proposed that "living in a society" could be recognized from the aspect of functioning. By referring to the ICF, a rating scale for functioning in individuals with mental disorders was created to evaluate these functions. This scale measures the daily functioning of individuals with mental disorders, and consists of activity and participatory aspects. The present study aimed to examine the reliability and validity of the activities aspect of the rating scale for functioning in individuals with mental disorders. Fourteen psychiatric day-care staff evaluated the functioning of 143 psychiatric day-care users. The results showed high reliability of the scale: Pearson's correlation coefficient for the test-retest method was 0.71(p<0.01); and Pearson's correlation coefficient for the split-half method ranged from 0.87 to 0.88(p<0.01). With a Cronbach's reliability coefficient of each factor ranging from 0.72 to 0.85(p<0.01), internal consistency was demonstrated to be high. Factor analysis was conducted for validity and 4 factors were extracted. With a high accumulated proportion in the factor analysis of 63.6%, validity was indicated to be high. The correlation coefficient between evaluation by others and self-evaluation was 0.43, which demonstrates the reliability and validity of the scale.
