This book is the first to summarize the voluminous literature on the development of cognitive, codification, language, and expressive/affective (CCCE) skills from a clinical standpoint. Emphasizing the need to ground services in research and theory, the author constructs three basic clinical models--a conceptual model for understanding, a descriptive model for formal assessment, and a facilitative model for intervention. These models have major implications for the work of all those who deal with CCCE problems in a professional capacity.