developmental phonological disorderAny of a group of speech disorders which affect children’s ability to develop easily understood speech by age 4. Developmental phonological disorders are characterised by difficulty in learning and organising sounds needed for clear speech, reading and spelling. They are often familial, and may occur with other communication disorders—e.g., stuttering, specific language impairment, or developmental speech apraxia.
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phonologic disorderSpeech disorder Speech pathology A disorder characterized by failure to use speech sounds appropriate for the person's age and dialect; PDs are more common in boys–10% < age 8, 0.5% > age 17 Etiology Genetics, low socioeconomic status, large family
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.