Mayer, J. L. and Heaton, Pam F.. 2014. Age and sensory processing abnormalities predict declines in encoding and recall of temporally manipulated speech in high-functioning adults with ASD. Autism Research, 7(1), pp. 40-49. ISSN 19393792 [Article]

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Abstract or Description

While temporal and perceptual processing abnormalities, identified in a number of electrophysiological and brain imaging studies of individuals with (ASD), are likely to impact on speech perception, surprisingly little is known about the behavioral outcomes of such abnormalities. It has been hypothesized that rapid temporal processing deficits may be linked to impaired language development through interference with acoustic information during speech perception. The present study aimed to investigate the impact of temporal changes on encoding and recall of speech, and the associated cognitive, clinical, and behavioral correlates in adults with ASD. Research carried out with typically developing (TD) adults has shown that word recall diminishes as the speed of speech increases, and it was predicted that the magnitude of this effect would be far greater in those with ASD because of a preexisting rapid temporal processing deficit. Nineteen high-functioning adults with ASD, and age- and intelligence-matched TD controls performed verbatim recall of temporally manipulated sentences. Reduced levels of word recall in response to increases in presentation speed were observed, and this effect was greater in the older participants in the ASD group than in the control group. This is the first study to show that both sensory abnormalities and aging impact on speech encoding in ASD. Auditory processing deficits in ASD may be indicative of an association with the sensory abnormalities and social and communication impairments characterizing the disorder. Autism Res 2014, 7: 40-49.

Item Type:	Article
Identification Number (DOI):	https://doi.org/10.1002/aur.1333
Additional Information:	This research was carried out with the support of the Baily Thomas Trust. We are very grateful to all the ASD and TD adults who participated in our study. We would also like to thank Mr. Ian Hannett for his assistance creating the stimuli.
Keywords:	Aging; Auditory Processing; Autism Spectrum Disorders; Speech Perception
Departments, Centres and Research Units:	Psychology
Dates:	Date Event 1 February 2014 Published
Item ID:	10492
Date Deposited:	22 Jul 2014 06:18
Last Modified:	30 Jun 2017 15:41
Peer Reviewed:	Yes, this version has been peer-reviewed.
URI:	https://research.gold.ac.uk/id/eprint/10492

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