Sponsor
Portland State University. Department of Speech Communication
First Advisor
Rhea Paul
Term of Graduation
Fall 1994
Date of Publication
11-2-1994
Document Type
Thesis
Degree Name
Master of Science (M.S.) in Speech Communication: Speech and Hearing Sciences
Department
Speech Communication
Language
English
Subjects
Language disorders in children, Speech disorders in children
DOI
10.15760/etd.7038
Physical Description
1 online resource (2, 61 pages)
Abstract
Researchers are seeking more information on how and why language disorders tend to run in families, particularly siblings of language disordered children.
The purpose of this study was to examine the prevalence of language and related disorders in the siblings of two groups of children: those with slow expressive language development (SELD) and those with a normal language history. This study sought to answer the following questions: 1) Is there a significant difference in prevalence of language problems in two groups of children: those with SELD and those with a normal language history?, and 2) Is there a greater probability of language problems in the siblings of children in the SELD group who have receptive/expressive language disorders when compared to those SELD children with pure expressive language deficits or to those with a normal language history?
Subjects were 45 7-and 8-year old children participating in a longitudinal study at Portland State University. The children were divided into two groups, normal and SELD, based on test scores administered at intake to the original study. In order to look at the effect of a receptive component on heritability of language disorders, the SELD group was subgrouped into pure expressive language disorders and receptive/expressive language disorders based on tests administered at intake. A family history questionnaire was the method of data collection, asking parents to report on ten areas of language and related disorders in the siblings of subjects.
Results of one-sided z-tests and a chi-square test were computed and consistently found a highly significant difference between groups, with families of SELD subjects more likely to report a history of language problems over the normal group. These results are consistent with previous research in showing the heritability of language disorders. Results may also indicate that a receptive language component is associated with heritability of specific language disorders among children.
Rights
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Persistent Identifier
https://archives.pdx.edu/ds/psu/29835
Recommended Citation
Unkefer, Carol Lynn, "Familiality of Early Expressive Language Delay: A Sibling Study" (1994). Dissertations and Theses. Paper 5162.
https://doi.org/10.15760/etd.7038
Comments
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