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Multiple comparisons in two-factor testing of psychophysical thresholds by the delta test method |
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| Authors: | Norihiro Mita Hiroshi Sasaki Kazutaka Kani Akio Tabuchi |
| Affiliation: | 1. Department of Ophthalmology, Kanazawa Medical University, Uchinada-Ishikawa, Japan;2. Department of Orthoptics and Visual Science, Kyushu University of Health and Welfare, Nobeoka, Japan;3. Department of Sensory Science, Kawasaki University of Medical Welfare, Kurashiki, Japan |
| Abstract: | We propose an algorithm of multiple comparisons in two-factor testing of psychophysical thresholds. We use logistic regression combined with guessing rate and adopt the step-down procedure with Ryan–Einot–Gabriel–Welsch (REGW) significance levels for multiple test. We test hypotheses of main effects and interaction in two-factor problem by using the delta test statistics. |
| Keywords: | Delta test statistics Multiple comparisons REGW significance levels Step-down procedure Two-factor testing |