Researchers typically analyze double-blind listening tests with a one-tailed significance test, which provides for deciding whether performance is better than chance. But the little-known directional two-tailed test, which provides for deciding whether performance is better or worse than chance, may be more useful to some investigators. This paper compares the tests, discusses when to use them, and provides statistical tables for conducting the tests without calculation.

Authors: Leventhal, Les; Huynh, Cam-Loi
Affiliation: Department of Psychology, University of Manitoba, Winnipeg, Man., Canada
JAES Volume 44 Issue 10 pp. 850-863; October 1996
Publication Date: October 1, 1996

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