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Auditory specialization in deaf children. Aural and cognitive interactions
R K Rittenhouse1, P L Kenyon, S Healy
1University of Arkansas at Little Rock.
American Annals of the Deaf
|March 1, 1994
Summary
Hemispheric specialization in the brain may influence cognitive performance in deaf children. Better hearing in one ear correlates with cognitive abilities, suggesting brain lateralization impacts learning in children with hearing loss.
Area of Science:
- Neuroscience
- Developmental Psychology
- Audiology
Background:
- Hemispheric specialization is crucial for understanding brain function.
- Language acquisition and use in deaf children are complex processes.
- The role of residual hearing in cognitive development for hearing-impaired children requires further investigation.
Purpose of the Study:
- To investigate the relationship between better-ear hearing acuity and cognitive performance in severely hearing-impaired children.
- To test the hypothesis that hemispheric influence moderates this relationship.
- To explore the implications of hemispheric specialization theory for cognitive development in deaf children.
Main Methods:
- A cohort of 27 children with bilateral, severe to profound hearing loss was studied.
- Participants were divided into two comparison groups and a control group.
- A series of cognitive tasks of increasing difficulty were administered to assess performance.
Main Results:
- Findings suggest that hemispheric interactions occur and influence cognitive performance.
- The degree of better-ear hearing acuity appears to interact with cognitive outcomes.
- Results align with predictions from hemispheric specialization theory and hearing ability.
Conclusions:
- Hemispheric interactions play a role in cognitive performance in severely hearing-impaired children.
- Hearing ability, particularly better-ear acuity, is a significant factor.
- Future research should focus on the interplay between brain lateralization and cognitive development in this population.