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Peer reviewedLewis, Barbara A. – Journal of Learning Disabilities, 1992
This study examined 87 pedigrees of individuals with histories of preschool phonology disorders. Significantly more family members with dyslexia and learning disabilities, but not stuttering or hearing impairment, were found in pedigrees of individuals with phonology disorders than in pedigrees of nondisabled individuals. (Author/JDD)
Descriptors: Children, Dyslexia, Family Influence, Genetics
Peer reviewedCastles, Anne; Datta, Helen; Gayan, Javier; Olson, Richard K. – Journal of Experimental Child Psychology, 1999
Examined heritability of reading deficits in dyslexic subtypes. Found reading deficits were heritable in developmental phonological and surface dyslexics, with greater genetic contribution in the former. Findings suggest a partial independence in the development of cognitive processes involved in reading, and affirm accounts of surface dyslexia…
Descriptors: Adolescents, Biological Influences, Children, Cognitive Development
