The TAU condition will be implemented consistent with usual and customary clinical practices within the Child Psychiatry Clinic at Seattle Children's Hospital (SCH. Within the SCH system, TAU for a depressed adolescent will typically consist of an individual therapy approach with adjunct family sessions and pharmacotherapy as deemed necessary by the primary therapist. The therapeutic approach typically used is cognitive behavioral but is administered in an eclectic, non-manualized fashion. Therapists for the TAU arm of the study will be care providers currently working within the SCH system. For this phase of the study, we will draw on clinicians whose level of experience is comparable to that of the Behavioral Activation therapists.

Behavioral activation is a 12 week psychotherapeutic intervention utilizing a semi-structured format. Initial sessions focus on specific areas (Assessment and orientation, Activation, Problem Solving, Goal Setting, Overcoming Barriers, Avoidance) interspersed as needed by sessions that focus on individual issues and applications. In these sessions the therapists maintains the session structure, but can use techniques presented in earlier sessions based on their functional analysis of the particular case. Parents participate in at least two of the ATA sessions but more active parental participation can be included as needed.

Behavioral activation is a 12 week psychotherapeutic intervention utilizing a semi-structured format. Initial sessions focus on specific areas (Assessment and orientation, Activation, Problem Solving, Goal Setting, Overcoming Barriers, Avoidance) interspersed as needed by sessions that focus on individual issues and applications. In these sessions the therapists maintains the session structure, but can use techniques presented in earlier sessions based on their functional analysis of the particular case. Parents participate in at least two of the ATA sessions but more active parental participation can be included as needed.

The CDRS-R, an interview-based measure, will be administered by the blind independent evaluator with both the parent and adolescent. The CDRS-R has been found to be a sensitive and reliable severity measure of depression in children and adolescents. Ratings are made across 17 symptoms, including depressed feelings, sleep disturbance, and suicidal ideation, on a scale of 1 (no difficulties) to 7 (severe clinically significant difficulties). A raw score at or above 45 or a T-score at or above 65 is reported to be increasingly indicative of a likely depressive disorder.

The CDRS-R, an interview-based measure, will be administered by the blind independent evaluator with both the parent and adolescent. The CDRS-R has been found to be a sensitive and reliable severity measure of depression in children and adolescents. Ratings are made across 17 symptoms, including depressed feelings, sleep disturbance, and suicidal ideation, on a scale of 1 (no difficulties) to 7 (severe clinically significant difficulties). A raw score at or above 45 or a T-score at or above 65 is reported to be increasingly indicative of a likely depressive disorder.

The CDRS-R, an interview-based measure, will be administered by the blind independent evaluator with both the parent and adolescent. The CDRS-R has been found to be a sensitive and reliable severity measure of depression in children and adolescents. Ratings are made across 17 symptoms, including depressed feelings, sleep disturbance, and suicidal ideation, on a scale of 1 (no difficulties) to 7 (severe clinically significant difficulties). A raw score at or above 45 or a T-score at or above 65 is reported to be increasingly indicative of a likely depressive disorder.

The Clinical Global Impressions Scale will be utilized as an assessment of the severity of the adolescent's symptoms/level of symptom improvement as rated by the independent clinical evaluator. Scores range on a scale from 1-7, with lower scores denoting better outcome. The CGI measure has been widely utilized in a number of treatment outcome studies with adolescents to ascertain treatment response rate, with scores of 1 (very much improved) or 2 (much improved) indicating positive response to treatment.