Includes bibliographical references and indexes.

Children's language learning: an interactionist perspective / Robin S. Chapman -- In the mouths of babes: anatomic, motor, and sensory foundations of speech development in children / Ray D. Kent & Houri K. Vorperian -- Typical talkers, late talkers, and children with specific language impairment: a language endowment spectrum? / Susan Ellis Weismer -- Utterance length and lexical diversity in American- and British-English speaking children: what is the evidence for a clinical marker of SLI? / Thomas Klee, William J. Gavin & Stephanie F. Stokes -- Gesture development from an interactionist perspective / Elizabeth Crais -- Dissociations in the development of early communication in Autism Spectrum Disorders / Rhea Paul ... [et al.] -- Language learning and use as embedded social activities: evidence from autism and Fragile X Syndrome / Leonard Abbeduto & Andrea McDuffie -- Fragile X Syndrome: memory skills and the emergence of reading in males / Mina C. Johnson-Glenberg -- The case for bilingualism in children with Down Syndrome / Elizabeth Kay-Raining Bird -- The development of communicative competence in vulnerable populations / Helen L. Johnson -- Can verbs be hubs? / Christine Dollaghan -- Documenting progress in language production: the evolution of a computerized language analysis system / Jon Miller -- Narrative abilities in children with language impairments / Donna M. Boudreau -- Developmental considerations in addressing the AAC needs of children with severe disabilities / Stephen N. Calculator -- What else about comprehension?: examining young children's discourse comprehension abilities / Linda M. Milosky & Elizabeth Skarakis-Doyle -- The developmental, interactionist perspective: an afterword / Robin S. Chapman.