ERIC Number: EJ927249
Record Type: Journal
Publication Date: 2011
Abstractor: As Provided
Reference Count: 0
Evidence for a Familial Speech Sound Disorder Subtype in a Multigenerational Study of Oral and Hand Motor Sequencing Ability
Peter, Beate; Raskind, Wendy H.
Topics in Language Disorders, v31 n2 p145-167 Apr-Jun 2011
Purpose: To evaluate phenotypic expressions of speech sound disorder (SSD) in multigenerational families with evidence of familial forms of SSD. Method: Members of five multigenerational families (N = 36) produced rapid sequences of monosyllables and disyllables and tapped computer keys with repetitive and alternating movements. Results: Measures of repetitive and alternating motor speed were correlated within and between the two motor systems. Repetitive and alternating motor speeds increased in children and decreased in adults as a function of age. In two families with children who had severe speech deficits consistent with disrupted praxis, slowed alternating, but not repetitive, oral movements characterized most of the affected children and adults with a history of SSD, and slowed alternating hand movements were seen in some of the biologically related participants as well. Conclusion: Results are consistent with a familial motor-based SSD subtype with incomplete penetrance, motivating new clinical questions about motor-based intervention not only in the oral but also the limb system.
Descriptors: Evidence, Speech Impairments, Psychomotor Skills, Age Differences, Correlation, Comparative Analysis, Heredity, Genetics, Adults, Children
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A