Journal of Speech, Language, and Hearing Research Vol.55 838-847 June 2012. doi:10.1044/1092-4388(2011/11-0101)
© American Speech-Language-Hearing Association
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Article

Effect of Speaker Age on Speech Recognition and Perceived Listening Effort in Older Adults With Hearing Loss

Megan J. McAuliffea,,b
Phillipa J. Wildinga
Natalie A. Rickarda,,b
Greg A. O'Beirnea,,b
a University of Canterbury, Christchurch, New Zealand
b New Zealand Institute of Language, Brain & Behaviour, University of Canterbury

Correspondence to Megan J. McAuliffe: megan.mcauliffe{at}canterbury.ac.nz

Purpose: Older adults exhibit difficulty understanding speech that has been experimentally degraded. Age-related changes to the speech mechanism lead to natural degradations in signal quality. We tested the hypothesis that older adults with hearing loss would exhibit declines in speech recognition when listening to the speech of older adults, compared with the speech of younger adults, and would report greater amounts of listening effort in this task.

Method: Nineteen individuals with age-related hearing loss completed speech recognition and listening effort scaling tasks. Both were conducted in quiet, when listening to high- and low-predictability phrases produced by younger and older speakers, respectively.

Results: No significant difference in speech recognition existed when stimuli were derived from younger or older speakers. However, perceived effort was significantly higher when listening to speech from older adults, as compared with younger adults.

Conclusions: For older individuals with hearing loss, natural degradations in signal quality may require greater listening effort. However, they do not interfere with speech recognition—at least in quiet. Follow-up investigation of the effect of speaker age on speech recognition and listening effort under more challenging noise conditions appears warranted.

KEY WORDS: aging, hearing loss, effort, speech recognition, speech, listener


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