Abram Bailey, AuD
The summary of his article is:
1) When different words are presented to both ears simultaneously, the left ear is, on average, at a slight disadvantage in speech recognition.
2) The average difference, or “right-ear advantage/ left-ear disadvantage (REA/LED),” is small, perhaps 3-5%, in young adults with normal hearing.
3) This REA/LED increases systematically as some persons age and develop hearing loss. The effect may be due to aging effects on the corpus callosum, the bridge between the two cerebral hemispheres.
4) When elderly persons with hearing loss are evaluated for possible use of amplification, some reject binaural fittings in favor of monaural amplification, suggesting the possible presence of binaural interference.
5) The favored fitting, in this case, is usually for the right ear.
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