Variables Influencing Performance on Speech-Sound Discrimination Tests

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Abstract
Stimulus items were presented in three different contexts and under two different listening conditions to a total of 72 nursery, kindergarten, and first-grade children divided into equally sized groups on the basis of age. Results indicated that both the context of stimulus item presentation and the presence of background noise affected accuracy of performance. Children in all three groups consistently made more errors in the context using limited grammatical and phonetic cues. Noise disrupted performance in all contexts, but the greatest disruption occurred in the paired-comparison context. It appeared that contexts employing grammatical cues were more resistant to disruption from background noise. The results of this investigation also indicated that the performance of young children may have been affected by factors other than their ability to discriminate speech sounds.

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