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Working memory capacity moderates the effect of hearing aid experience on phonological processing performance.
Ruijing Ning1, Emil Holmer1, Henrik Danielsson1
1Disability Research Division, Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden.
Frontiers in Neuroscience
|March 5, 2025
Summary
Hearing impairment increases reliance on working memory capacity (WMC) for phonological tasks. Hearing aid use benefits phonological processing, with WMC influencing this effect.
Area of Science:
- Auditory Neuroscience
- Cognitive Psychology
Background:
- Acquired hearing impairment often leads to reduced phonological processing.
- Working memory capacity (WMC) is hypothesized to mediate this decline.
- The impact of hearing aid use on phonological processing and WMC is not well understood.
Purpose of the Study:
- To differentiate the effects of hearing impairment and hearing aid use on phonological processing.
- To explore how hearing aid use impacts phonological processing, considering WMC.
Main Methods:
- Mixed-effects models were used to analyze rhyme judgment performance.
- Three groups were studied: hearing aid users, hearing-impaired non-users, and normal hearing controls.
- The association between years of hearing aid use and phonological performance was examined.
Main Results:
- Hearing impairment increased the dependence of rhyme judgment on WMC, irrespective of hearing aid use.
- Hearing aid use showed a positive association with rhyme judgment performance.
- The positive effect of hearing aid use was modulated by individual WMC levels.
Conclusions:
- WMC plays a crucial role in how effectively hearing aids support phonological processing.
- WMC may influence hearing aid effectiveness through signal processing and user strategy implementation.
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