Recognition Masking-Level Differences Spondaic Words for 10 Cid W-1 Psychometric functions for the SoNo and Sπ.N o conditions and masking level differences were obtained for a subgroup of 10 words having the largest masking-level differences of 36 CID W-1 spondaic words. The mean masking-level difference obtained from 36 young normal adults was 9.4 dB with a standard deviation of ... Research Note
Research Note  |   December 01, 1982
Recognition Masking-Level Differences Spondaic Words for 10 Cid W-1
 
Author Affiliations & Notes
  • Richard H. Wilson
    Veterans Administration Medical Center, Long Beach, California and University of California, Irvine
  • Janet E. Shanks
    Veterans Administration Medical Center, Long Beach, California and University of California, Irvine
  • Katherine A. Koebsell
    Veterans Administration Medical Center, Long Beach, California and University of California, Irvine
Article Information
Research Notes
Research Note   |   December 01, 1982
Recognition Masking-Level Differences Spondaic Words for 10 Cid W-1
Journal of Speech, Language, and Hearing Research, December 1982, Vol. 25, 624-628. doi:10.1044/jshr.2504.624
History: Received August 5, 1981 , Accepted December 3, 1981
 
Journal of Speech, Language, and Hearing Research, December 1982, Vol. 25, 624-628. doi:10.1044/jshr.2504.624
History: Received August 5, 1981; Accepted December 3, 1981

Psychometric functions for the SoNo and Sπ.N o conditions and masking level differences were obtained for a subgroup of 10 words having the largest masking-level differences of 36 CID W-1 spondaic words. The mean masking-level difference obtained from 36 young normal adults was 9.4 dB with a standard deviation of 1.2 dB. The smallest masking-level difference of 7.4 dB was suggested as the low cut-off for normalcy. A shorter version of the masking-level difference procedure was suggested for clinical implementation. The subgroup of 10 words may permit a wider separation between normal and abnormal performance, and thus may enhance the clinical utility of the masking-level difference task for speech recognition. Because the magnitude of the masking-level difference will vary with the materials and procedures used, each clinic must establish its own norms.

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