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Journal Article

Type 1 and Type 2 Errors in the Statistical Analysis of Listening Tests

Authors: Leventhal, Les

Journal of the Audio Engineering Society · Volume 34 · Issue 6 · pp. 437–453 · June 1986

Abstract

When the conventional 0.05 significance level is used to analyze listening test data, employing a small number of trials or listeners can produce an unexpectedly high risk of concluding that audible differences are inaudible (type 2 error). The risk can be both large absolutely and large relative to the risk of concluding that inaudible differences are audible (type 2 error). this constitutes systematic bias against those who believe that differences are audible between well-designed electronic components that are spectrally equated and not overdriven. A statistical table is introduced that enables readers to look up type 1 and type 2 error risks without calculation. Ways to manipulate the risks are discussed, a quantitative measure of a listening test's fairness is introduced, and implications for reviewers of the listening test literature are discussed.

Details

Publication
Journal of the Audio Engineering Society
Volume
34
Issue
6
Pages
437–453
Publication date
June 6, 1986
Affiliation
Department of Psychology, University of Manitoba, Winnipeg, Man. R3T 2N2, Canada (See document for exact affiliation information.)
Type
Journal Article