Book excerpt: Handbook of Pediatric Psychological Screening and Assessment in Primary Care provides an overview of the principles of screening, monitoring, and measuring of the treatment outcomes of behavioral health disorders in pediatric primary care. The Handbook serves as a guide to the selection of psychometric measures that can be used to screen for and/or assess behavioral health problems of children and adolescents. The Handbook is an invaluable reference to behavioral health clinicans in maximizing potential benefits in efficient assessment and effective treatment of children and adolescents in pediatric primary care settings as well as other health care settings.