Analyzing Listening Tests with the Directional Two-Tailed Test
Les Leventhal, Cam‐Loi Huynh · Journal of the Audio Engineering Society · 1996
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.