Abstract
The field of clinical behavior analysis is growing rapidly among third-generation behavior therapy. Behavioral activation for depression has recently received empirical support. This article reports the process of behavioral activation with a depressed client. The client was a male adult who suffered from depressive mood, decresed willpower, and negative rumination. At the beginning of intervention, the therapist conducted functional analysis and value assessment. Then therapist supported that client addressed activity scheduling and analyzed his depressed behavior. As a result, the client's depressed mood changed and he was able to go about his daily life and return to work. It was suggested that sufficient functional analysis and value assessment, step-by-step activity scheduling, and awakening to escape behavior were important to modify depressed behavior and mood.
