Reflecting the enormous changes that have taken place in our knowledge and understanding of developmental disorders, this groundbreaking international volume brings this vast and complex field together for the first time. The editors have collected together the world’s leading academic scholars and clinicians, to explore how current research across a range of different disciplines can inform academic knowledge and clinical practice and help to improve the lives of individuals and their families.The SAGE Handbook of Developmental Disorders is a central reference in the field for all academics, researchers, clinicians and advanced students involved in the study of developmental disorders, including those in clinical psychology, child psychiatry, child mental health, child genetics and pediatrics, speech language pathology, and developmental disabilities and special education.

Developmental Language Disorders: Overview

Developmental Language Disorders: Overview

Developmental language disorders: Overview
Courtenay FrazierNorbury


Language is a fundamental achievement of the human species. For most of us, learning our native language is an effortless process, one that we take for granted. However, competent language acquisition involves mastery of a number of interacting domains in at least two modalities, production and comprehension. These domains include phonology (speech sounds and rules for combining speech sounds to form words), semantics (meaning), morphology (prefixes and suffixes that modify meaning), and syntax (hierarchical rules that govern word combinations). Mastery of sounds, words, and grammar does not guarantee communication; most of what we say is at least temporarily ambiguous. For instance, sentences such as ‘the fish is on the table’ have multiple meanings, the intended meaning may ...

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