Feature of the Phonological Representation of Children with Down Syndrome

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To examine the possibility of incomplete phonological representations affect the inconsistent articulation error or speech unintelligibility of children with Down syndrome, experiments were performed : using the stimulation words which have large and small difference from target, response of children with Down syndrome were assessed. The results were as follows : Percentage of correct answers is"no different conditions "90.5%," small difference conditions "19.0%,"laege difference conditions "52.4%. This result suggests that it is difficult for children with Down syndrome to recognize the difference in the words which have small articulation errors than large errors, and children with Down syndrome have incomplete phonological representations. Incompleteness of phonological representations may be one of the factors of the inconsistent articulation error or speech unintelligibility of children with Down syndrome.