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Joshua.I.Breier{at}uth.tmc.edu
The auditory temporal deficit hypothesis predicts that children with specific reading disability (RD) will exhibit a deficit in the perception of auditory temporal cues in nonspeech stimuli. Tasks assessing perception of auditory temporal and nontemporal cues were administered to children with (a) RD without attentiondeficit/ hyperactivity disorder (RD/no-ADHD, n=40), (b) ADHD alone (ADHD/no-RD, n=33), (c) RD and ADHD (RD/ADHD, n=36), and (d) no impairment (NI, n=41). The presence of RD was associated with a specific deficit in detection of a tone onset time asynchrony, but no reduction in performance on other tasks assessing perception of temporal or nontemporal acoustic cues. The presence of ADHD was associated with a general reduction in performance across tasks. The pattern of results did not indicate a pervasive deficit in auditory temporal function in children with RD, but did suggest a possible sensitivity to backward masking in this group. Results also indicated that the comorbid presence of ADHD is a significant factor in the performance of children with RD on psychoacoustic tasks.
KEY WORDS: specific reading disability, attention deficit/hyperactivity disorder, auditory perception, psychoacoustics
Submitted on December 7, 2001
Accepted on July 29, 2002
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