Seniors who receive supportive services face a variety of psychosocial vulnerabilities that put them at risk for depression. One group with very high risk is older adults receiving aging services through Medicaid waiver programs. This 3-year research uses a randomized controlled clinical trial to assess the effectiveness of brief behavioral therapies (problem solving therapy [PST] and Brief Behavioral Therapy for Insomnia [BBTI]) to prevent depression in seniors receiving aging services.