Auditory Performance Characteristics of the Computerized Revised Token Test (CRTT)

Autor/inn/en	Eberwein, Cynthia A.; Pratt, Sheila R.; McNeil, Malcolm R.; Fossett, Tepanta R. D.; Szuminsky, Neil J.; Doyle, Patrick J.
Titel	Auditory Performance Characteristics of the Computerized Revised Token Test (CRTT)
Quelle	In: Journal of Speech, Language, and Hearing Research, 50 (2007) 4, S.865-877 (13 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2007/061)
Schlagwörter	Stimuli; Hearing Impairments; Auditory Stimuli; Auditory Perception; Auditory Tests; Audiometric Tests; Computer Assisted Testing; Hearing (Physiology); Conditioning; Control Groups; Acoustics; Multivariate Analysis + Suchen Sie Ihr Suchwort? Anreizsystem; Hearing impairment; Hörbehinderung; Auditive Stimulation; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Auditory test; Autismus; Gehör; Hören; Multivariate Analyse
Abstract	Purpose: To assess the Computerized Revised Token Test (CRTT) performance of individuals with normal hearing under several intensity conditions and under several spectral and temporal perturbation conditions. Method: Sixty normal-hearing listeners were randomly assigned to 1 of 3 groups. Group 1 provided performance-intensity information about CRTT performance using uncompressed acoustic stimuli. Groups 2 and 3 completed the CRTT using temporally and spectrally compressed and expanded stimuli. CRTT performance functions were plotted for each group. Results: Group 1 required minimal audibility to perform maximally on this task. As expected, Groups 2 and 3 showed significant differences across subtests, regardless of distortion condition. Mean differences in performance between successive conditions for Group 2 increased beyond 40% time compressed. There was 1 significant difference for the time-expanded condition. There were no differences across frequency compressed and expanded conditions. Conclusion: Young listeners require limited signal gain on the CRTT to achieve maximum performance. Time and frequency compression and expansion results were consistent with previous findings with varying types of speech stimuli. The results have implications for administration and interpretation of the CRTT administered to persons from other populations and will help in the development of a normative database for the CRTT. (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10