Research suggests that sleep plays an important role in the development, progression, and maintenance of mood disorder symptoms among children and adolescents.1-4 While most of the extant research focuses on the relationship between insomnia and mood disorders, other sleep disorders such as delayed sleep phase, inadequate total sleep duration and bedtime resistance in younger children may play important roles in mood episodes.1, 4, 5 While there are no FDA approved medications specifically for sleep disorders in children and adolescents, fortunately there are effective behavioral sleep interventions. Research indicates that these behavioral interventions do effectively improve sleep in children and adolescents with depression, and indicate that sleep improvement is an important mediator of depression treatment outcome.6-8 There is far less literature on Bipolar Disorders among youth and sleep and more research is needed to examine the potential role of a sleep intervention on the course of mood episodes among youth.