Comprehensively exploring the development of psychiatric disorders in 2- to 6-year-olds, this authoritative handbook has been thoroughly revised to incorporate important scientific and clinical advances. Leading researchers examine how behavioral and emotional problems emerge and can be treated effectively during this period of rapid developmental and brain changes. Current knowledge is presented on conduct disorders, attention-deficit/hyperactivity disorder, anxiety disorders, depressive disorders, autism spectrum disorder, attachment disorders, and sleep disorders in very young children. The volume reviews a range of interventions for preschoolers and their caregivers--including clear descriptions of clinical techniques--and discusses the strengths and limitations of the empirical evidence base. New to This Edition *Many new authors; extensively revised with the latest research and empirically supported treatments. *Heightened focus on brain development and the neural correlates of disorders. *Section on risk and resilience, including chapters on sensitive periods of development and the early environment. *Chapters on parent-child interaction therapy, cognitive-behavioral therapies, attachment-based therapies, and translational approaches to early intervention.