Relating past and present trends to the future direction of the field, this informative study introduces readers to both the development and behavior problems of children and adolescents as well as to the clinical methods for assessing and treating these problems. Provides complete overviews of diagnosis and assessment methods, etiological factors, and therapeutic interventions, followed by a review of DSM-IV disorders and their assessment, etiology, and treatment. Discusses the methods for obtaining information about children's development and behavior problems and the problems associated with the evaluation and interpretation of this information. Familiarizes readers with the major types of children's psychological problems and our knowledge about their assessment, etiology, and treatment. Discusses today's most frequently used assessment instruments, and broadens coverage of attention-deficit/hyperactivity disorder. Case study vignettes and fully updated lists of suggested readings are include. For psychologists, educators, social workers, and those in physical or occupational therapy.