In Essentials of WPPSI-IV Assessment, Susie Engi Raiford and Diane Coalson--the WPPSI-IV research directors--offer an insiders perspective on the scales conceptualization, development, administration, and scoring. New Behind the Scenes boxes provide unprecedented insight into the new subtests and the test development process. Anyone who assesses young children is familiar with the inherent challenges of obtaining accurate and adequate test data for this challenging population. The authors, who have rich clinical as well as research experience, apply an interpretive approach that is flexible to the real constraints and challenges that practitioners encounter when testing younger children. The approach describes performance in both normative and intrapersonal contexts and facilitates interpretive case formulations from multiple theoretical and clinical perspectives.