Journal
JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH
Volume 55, Issue 3, Pages 865-878Publisher
AMER SPEECH-LANGUAGE-HEARING ASSOC
DOI: 10.1044/1092-4388(2011/11-0096)
Keywords
word recognition testing; children; normal hearing; cochlear implants
Funding
- Deafness Research UK [419:YOR:QS]
- International Research Grant from Action on Hearing Loss [G48 Vickers]
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Purpose: To establish the age at which children can complete tests of spatial listening and to measure the normative relationship between age and performance. Method: Fifty-six normal-hearing children, ages 1.5-7.9 years, attempted tests of the ability to discriminate a sound source on the left from one on the right, to localize a source, to track moving sources, and to perceive speech in noise. Results: Tests of left-right discrimination, movement tracking, and speech perception were completed by >= 75% of children older than 3 years. Children showed adult levels of performance from age 1.5 years (movement tracking), 3 years (left-right discrimination), and 6 years (localization and speech in noise). Spatial release from masking-calculated as the difference in speech reception thresholds between conditions with spatially coincident and spatially separate speech and noise-remained constant at 5 dB from age 3 years. Data from a separate study demonstrate the age at which children with cochlear implants can complete the same tests. Assessments of left-right discrimination, movement tracking, and speech perception were completed by >= 75% of children who are older than 5 years and who wear cochlear implants. Conclusion: These data can guide the selection of tests for future studies and inform the interpretation of results from clinical populations.
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