Understanding the regulation and disorders of sleep has enormous relev
ance to clinicians facing child and adolescent behavioral or emotional
problems. This interface between sleep and child psychiatry encompass
es a wide range of pragmatic as well as theoretic issues including dia
gnosis, treatment, etiology, and prevention. The conceptual and empiri
c support for these statements are discussed in the context of the art
icles in this issue of Child and Adolescent Psychiatric Clinics of Nor
th America.