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Updated: Jan 14, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Development of the binaural intelligibility level difference for speech-in-speech recognition
Lori J Leibold1, Jenna Felder2, Elizabeth Benson3
1Center for Hearing Research, Boys Town National Research Hospital, Omaha, Nebraska 68131, USA.
Abstract:
This study aimed to characterize maturation of the binaural intelligibility level difference (BILD) for school-age children in the context of speech-in-speech recognition. Children (5-17 years) and adults completed an adaptive, open-set sentence recognition task in a two-talker masker in two binaural conditions: (1) target and masker speech in-phase across the two ears, and (2) target speech presented 180° out-of-phase across the two ears and masker speech presented in-phase. Estimates of the BILD, computed as the difference score between the two binaural conditions, were mature by ten years of age, consistent with previous data on the BILD for speech-in-noise recognition.
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