List equivalency of the CID everyday sentences (Harris revision) under three signal-to-noise ratios.

The primary purpose of this study was to determine list equivalency of Harris' revision of the CID Everyday Sentence Lists under three signal-to-noise ratios: O dB, --3 dB, and --6 dB. On the basis of list means, nonsignificant groupings of lists were found at each noise level; however, lists were not equivalent at any level on the basis of a +/- 10% standard error or measurement (95% confidence interval). It is concluded that Harris' revision of the CID Everyday Sentences should not be used in their present form for intraindividual comparisons.