Preschool children have been largely neglected in the mental health treatment literature, although research has established that many behavioral and emotional disorders in children result from events occurring during the preschool years or are first manifested during this period. This has occurred for several reasons. Traditional psychoanalytic thinking has considered preschoolers to be too psychologically immature for complete manifestations of psychopathology, and the limited language abilities of young children have complicated assessment procedures and made them less appropriate for...