Psychometric functions for shortened administrations of a speech recognition approach using tri-word presentations and phonemic scoring.

Autor: Gelfand SA; Queens College, Flushing, NY, USA. stanley.gelfand@qc.cuny.edu, Gelfand JT
Jazyk: angličtina
Zdroj: Journal of speech, language, and hearing research : JSLHR [J Speech Lang Hear Res] 2012 Jun; Vol. 55 (3), pp. 879-91. Date of Electronic Publication: 2012 Jan 31.
DOI: 10.1044/1092-4388(2011/11-0123)
Abstrakt: Method: Complete psychometric functions for phoneme and word recognition scores at 8 signal-to-noise ratios from -15 dB to 20 dB were generated for the first 10, 20, and 25, as well as all 50, three-word presentations of the Tri-Word or Computer Assisted Speech Recognition Assessment (CASRA) Test (Gelfand, 1998) based on the results of 12 normal-hearing young adult participants from the original study.
Results: The psychometric functions for both phoneme and word scores were very similar and essentially overlapping for all set sizes. Performance on the shortened tests accounted for 98.8% to 99.5% of the full (50-set) test variance with phoneme scoring, and 95.8% to 99.2% of the full test variance with word scoring. Shortening the tests accounted for little if any of the variance in the slopes of the functions.
Conclusions: The psychometric functions for abbreviated versions of the Tri-Word speech recognition test using 10, 20, and 25 presentation sets were described and are comparable to those of the original 50-presentation approach for both phoneme and word scoring in healthy, normal-hearing, young adult participants.
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje