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"Product" Versus "Process" Measures in Assessing Speech Recognition Outcomes in Adults With Cochlear Implants
Aaron C Moberly1, Irina Castellanos1, Kara J Vasil1
1Department of Otolaryngology-Head and Neck Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio.
Summary
Information processing functions predict speech recognition in adult cochlear implant (CI) users. Core cognitive abilities, not demographics, significantly influence CI outcomes after age adjustment.
Area of Science:
- Auditory Neuroscience
- Cognitive Psychology
- Rehabilitation Medicine
Background:
- Current speech recognition measures for cochlear implant (CI) users are product-oriented, assessing accuracy but not underlying cognitive processes.
- Process measures offer insights into elementary subprocesses crucial for speech recognition in complex auditory environments.
Purpose of the Study:
- To investigate the predictive relationship between information-processing functions and speech recognition outcomes in adult CI users.
- To determine the influence of demographic and audiologic factors on underlying information-processing functions.
Main Methods:
- Forty-two adult CI users completed speech recognition product measures and process measures assessing working memory, inhibitory control, processing speed, and fluid reasoning.
- Demographic and audiologic data, including duration of deafness and CI use, were collected.
Main Results:
- Speech recognition scores correlated with processing speed and fluid reasoning measures.
- After controlling for age, demographic and audiologic factors did not significantly correlate with process measure performance.
Conclusions:
- Information processing operations play a foundational role in speech recognition for postlingual adult CI recipients.
- Cognitive functions, rather than demographic/audiologic factors, appear to be key predictors of CI success.