Comparison of Pure-Tone Audibility Thresholds Obtained with Audiological and Two-Interval Forced-Choice Procedures Audibility thresholds were measured at 500 and 4000 Hz with a standard clinical procedure and a two-interval, forced-choice (2IFC) adaptive procedure for 72 normal-hearing and hearing-impaired listeners, age 17 to 83. Psychometric functions were obtained for clinical, 2IFC, and Yes-No procedures. A measure of response bias was obtained from the ... Research Article
Research Article  |   March 01, 1986
Comparison of Pure-Tone Audibility Thresholds Obtained with Audiological and Two-Interval Forced-Choice Procedures
 
Author Affiliations & Notes
  • Lynne Marshall
    Boys Town National Institute, Omaha, NE
  • Walt Jesteadt
    Boys Town National Institute, Omaha, NE
Article Information
Research Articles
Research Article   |   March 01, 1986
Comparison of Pure-Tone Audibility Thresholds Obtained with Audiological and Two-Interval Forced-Choice Procedures
Journal of Speech, Language, and Hearing Research, March 1986, Vol. 29, 82-91. doi:10.1044/jshr.2901.82
History: Received December 28, 1984 , Accepted September 20, 1985
 
Journal of Speech, Language, and Hearing Research, March 1986, Vol. 29, 82-91. doi:10.1044/jshr.2901.82
History: Received December 28, 1984; Accepted September 20, 1985

Audibility thresholds were measured at 500 and 4000 Hz with a standard clinical procedure and a two-interval, forced-choice (2IFC) adaptive procedure for 72 normal-hearing and hearing-impaired listeners, age 17 to 83. Psychometric functions were obtained for clinical, 2IFC, and Yes-No procedures. A measure of response bias was obtained from the Yes-No procedure. The 2IFC adaptive thresholds were 6.5 dB lower than audiological thresholds. The psychometric functions for the forced?choice procedures were generally shallower than those for the clinical procedure and were shifted to lower sound pressure levels. Response bias played a small role at best in accounting for the magnitude of the difference in threshold estimated by the adaptive and clinical procedures or for the differences among the psychometric functions.

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