Prediction of outcome with group cognitive therapy for depression

This paper tested a social-cognitive model of depressive episodes and their treatment within a predictive study of treatment response. Clinically depressed volunteers were given self-efficacy questionnaires and other measures before and after they were treated with cognitive therapy, and their progress was monitored over the succeeding 12 months. Improvements in depression during treatment were closely associated with self-efficacy regarding control of mood and with self-monitored levels of negative cognition. Remission over the following 12 months was predicted by the initial response to treatment, by a shorter duration of the episode prior to treatment, and by a post-treatment assessment of self-efficacy regarding control of negative cognition. Self-efficacy remained a significant predictor after post-treatment depression scores and episode duration were entered in a prediction equation. However, a programme of additional treatment based on the depression model did not result in improved depression status. Apart from the failure of the additional treatment, the results are consistent with a social-cognitive model of depressive episodes that emphasises the role of self-efficacy and skills regarding control of negative moods.