title: The NTID speech recognition test: NSRT(®).
abstract: OBJECTIVE
  The purpose of this study was to collect and analyse data necessary for expansion of the NSRT item pool and to evaluate the NSRT adaptive testing software.
  
  
  METHODS
  Participants were administered pure-tone and speech recognition tests including W-22 and QuickSIN, as well as a set of 323 new NSRT items and NSRT adaptive tests in quiet and background noise. Performance on the adaptive tests was compared to pure-tone thresholds and performance on other speech recognition measures. The 323 new items were subjected to Rasch scaling analysis.
  
  
  METHODS
  Seventy adults with mild to moderately severe hearing loss participated in this study. Their mean age was 62.4 years (sd = 20.8).
  
  
  RESULTS
  The 323 new NSRT items fit very well with the original item bank, enabling the item pool to be more than doubled in size. Data indicate high reliability coefficients for the NSRT and moderate correlations with pure-tone thresholds (PTA and HFPTA) and other speech recognition measures (W-22, QuickSIN, and SRT).
  
  
  CONCLUSIONS
  The adaptive NSRT is an efficient and effective measure of speech recognition, providing valid and reliable information concerning respondents' speech perception abilities.
authors: * National Technical Institute for the Deaf at Rochester Institute of Technology , Rochester , USA.
authors: Joseph H
authors: JH
authors: Bochner
authors: Wayne M
authors: WM
authors: Garrison
authors: Karen A
authors: KA
authors: Doherty
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001301:Audiometry, Pure-Tone / Q000379:methods* / Q000706:statistics & numerical data; D001309:Auditory Threshold; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009622:Noise; D015203:Reproducibility of Results; D013067:Speech Perception; D013069:Speech Reception Threshold Test / Q000379:methods* / Q000706:statistics & numerical data
keywords: Rasch analysis; Speech recognition; adaptive testing; item response theory