Outcomes of Early Language Delay: II. Etiology of Transient and Persistent Language Difficulties

A study involving 356 twin pairs with early language delay found environmental influences shared by both twins were more substantial than genetic factors. Heritability was significantly higher in those with persisting difficulties but only when assessed in terms of parental concern at 3 years or pro...

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Veröffentlicht in:	Journal of speech, language, and hearing research language, and hearing research, 2003-06, Vol.46 (3), p.561-575
Hauptverfasser:	Bishop, Dorothy V. M, Price, Thomas S, Dale, Philip S, Plomin, Robert
Format:	Artikel
Sprache:	eng
Schlagworte:	Assessment Biological and medical sciences Child Development Child, Preschool Children & youth Cohort Studies Delay Delayed Speech Diagnosis, Differential Early Childhood Education Early Identification Early Intervention Early life experiences Environment Environmental Influences Female Fundamental and applied biological sciences. Psychology Genetic factors Genetics Grammar Heredity Humans Language Language Acquisition Language Aptitude Language Development Disorders - diagnosis Language Development Disorders - genetics Language Impairments Language Skills Learning disabilities Longitudinal Studies Male Medical sciences Otorhinolaryngology. Stomatology Predictor Variables Predictors Preschool children Speech disorders Surveys and Questionnaires Time Factors Toddlers Twins Twins - genetics Vertebrates: nervous system and sense organs Vocabulary Development
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Zusammenfassung:	A study involving 356 twin pairs with early language delay found environmental influences shared by both twins were more substantial than genetic factors. Heritability was significantly higher in those with persisting difficulties but only when assessed in terms of parental concern at 3 years or professional involvement at 4 years. (Contains references.) (CR)
ISSN:	1092-4388 1558-9102
DOI:	10.1044/1092-4388(2003/045)