Although it is known that the impairment of social functioning, which is a significant aspect of depression, is distinct from depressive symptoms, whether there are any psychological factors that affect depressive symptoms and social functioning has not yet been investigated. The present study examines relations between psychosocial factors and depressive symptoms or social functioning. Patients (N-66) who had been diagnosed with unipolar major depressive disorder completed the Automatic Thoughts Questionnaire-Revised (ATQ-R) , the Tri-Axial Coping Scale (TAC-24) , Kikuchi's Scale of Social Skills (18 items version; Kiss-18) , the Beck Depression Inventory-IT (BDI-II), and the Social Adaptation Self-evaluation Scale (SASS) . The results showed that "self-criticism" was related to depressive symptoms, whereas "positive thoughts" "positive thinking-distraction" and "social skills" were related to social adaptation. Overall, the results of the present study suggest that the evaluation of psychological factors affecting depression is just as important as the evaluation of the extent of impairment of social functioning.
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