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Auditory biases in cognitive assessment: Insights from hearing-loss simulation for dementia screening

Fullgrabe, C.

2022-10-07 neuroscience
10.1101/2022.10.05.510931 bioRxiv
Show abstract

Cognitive-screening tests are used to detect pathological changes in mental abilities. Many use orally presented instructions and test items. Hence, hearing loss (HL), whose prevalence increases with age, may bias cognitive-test performance in the target population for dementia screening. To study the effect of the test format, an impairment-simulation approach was used in normal-hearing listeners to compare performance on the Hopkins Verbal Learning Test when test items were unprocessed and processed to simulate age-related HL. Immediate verbal recall declined with simulated HL, suggesting that auditory factors are confounding variables in cognitive assessment and result in the underestimation of cognitive functioning.

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