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Measuring speech motor skills in phonologically disordered pre-school children and their normally developing peers

Cohen, Wendy Melissa Myers (1999). Measuring speech motor skills in phonologically disordered pre-school children and their normally developing peers. PhD thesis The Open University.

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Abstract

Previous research has demonstrated that normally developing children are expected to have adult like control of their speech production skills by 10 years of age, as evidenced by increases in speed of production and decreases in performance variability. (e. g. Kent and Fortier 1980). There is also some evidence to suggest that phonologically disordered children may have poorer speech motor skills than their normally developing peers (e. g. Henry 1990, Edwards 1992, Waters 1992, Towne 1994).

There are numerous techniques that can be used to measure a number of different aspects of speech motor control. However, there are methodological difficulties in devising appropriate protocols for the collection and analysis of speed of speech production as used as an index of speech motor skill in young children.

Some of the techniques that have had clinical application include measurement of rate in connected speech production and measurement of diadochokinetic (DDK) repetition rate. This investigation compared normally developing and phonologically disordered preschool children on various indirect measures of speech motor skills, in imitated and spontaneous connected speech and in DDK tasks. The investigation also focused on refining the techniques of data collection and analysis appropriate to young children.

While the results vary with regard to the statistical significance of the differences between the two groups of children on articulation rates and DDK rates, analysis of the error patterns in single word, spontaneous connected speech, imitated connected speech and DDK productions identified a sub group of phonologically disordered children who may present with an underlying speech motor deficit as the basis of their phonological disability.

The results of the investigation are considered in terms of their implication for the speech motor skills of the two groups of children, techniques for measuring various aspects of speech motor skill and the clinical identification of phonologically disordered children who have an underlying speech motor deficit.

Item Type: Thesis (PhD)
Copyright Holders: 1999 The Author
Academic Unit/School: Faculty of Wellbeing, Education and Language Studies (WELS)
Item ID: 57925
Depositing User: ORO Import
Date Deposited: 26 Nov 2018 11:57
Last Modified: 01 Jul 2019 05:39
URI: http://oro.open.ac.uk/id/eprint/57925
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