A reexamination of the role of heredity in stuttering

A reexamination of the role of heredity in stuttering

In the light of recent breakthrough in the study of schizophrenia indicating a far stronger genetic factor than has been previously suspected, the role of heredity in stuttering is critically reexamined. Present knowledge of the role of heredity in stuttering springs from four principal data sources...

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Bibliographic Details
Published in:The Journal of speech and hearing disorders Vol. 42; no. 1; p. 47
Main Authors: Sheehan, J G, Costley, M S
Format: Journal Article
Language:English
Published: United States 01-02-1977
Subjects:
Dominance, Cerebral
Female
Humans
Male
Parents
Pregnancy
Sampling Studies
Schizophrenia - genetics
Sex Ratio
Stuttering - genetics
Stuttering - physiopathology
Twins
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Summary:In the light of recent breakthrough in the study of schizophrenia indicating a far stronger genetic factor than has been previously suspected, the role of heredity in stuttering is critically reexamined. Present knowledge of the role of heredity in stuttering springs from four principal data sources: (1) studies of familial incidence; (2) spontaneous recovery studies; (3) twin studies; and (4) studies of parental disfluency. It is hypothesized that the 4:1 sex ratio in stuttering may be the product of selective genetic factors. Critical examination of earlier and more recent studies leads to substantial evidence that a familial predisopsing factor exists in about 25% cases of stuttering.
ISSN:0022-4677
DOI:10.1044/jshd.4201.47