Editors in psychology, speech and hearing science, and language present this updated manual for professionals who assess language development in pre-K children using the MacArthur-Bates Communicative Development Inventories (CDIs), which are completed by parents. Chapters explain reasons for choosing the Words and Gestures and/or Words and Sentences forms, how data should be assessed and interpreted, and how the CDIs are applied in clinical and research environments. Discussion also covers the phases of development used in CDIs. The final section contains tables of fitted percentile scores for different age groups and in boys, girls, and both sexes combined, as well as samples of each form and a discussion of the CDI-III, an extension for children 30-37 months of age. Annotation ©2007 Book News, Inc., Portland, OR (booknews.com)