Journal of Speech, Language, and Hearing Research Vol.54 1682-1701 December 2011. doi:10.1044/1092-4388(2011/09-0261)
© American Speech-Language-Hearing Association
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Article

Investigating Speech Perception in Children With Dyslexia: Is There Evidence of a Consistent Deficit in Individuals?

Souhila Messaoud-Galusia
Valerie Hazana
Stuart Rosena
a University College London, United Kingdom

Correspondence to Valerie Hazan: v.hazan{at}ucl.ac.uk

Purpose: The claim that speech perception abilities are impaired in dyslexia was investigated in a group of 62 children with dyslexia and 51 average readers matched in age.

Method: To test whether there was robust evidence of speech perception deficits in children with dyslexia, speech perception in noise and quiet was measured using 8 different tasks involving the identification and discrimination of a complex and highly natural synthetic "bee"–"pea" contrast (copy synthesized from natural models) and the perception of naturally produced words.

Results: Children with dyslexia, on average, performed more poorly than did average readers in the synthetic syllables identification task in quiet and in across-category discrimination (but not when tested using an adaptive procedure). They did not differ from average readers on 2 tasks of word recognition in noise or identification of synthetic syllables in noise. For all tasks, a majority of individual children with dyslexia performed within norms. Finally, speech perception generally did not correlate with pseudoword reading or phonological processing—the core skills related to dyslexia.

Conclusions: On the tasks and speech stimuli that the authors used, most children with dyslexia did not appear to show a consistent deficit in speech perception.

KEY WORDS: dyslexia, speech perception, noise, reading, categorical perception


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