A comparison of five methods of illusion measurement |
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| Authors: | Stanley Coren Joan S Girgus |
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| Institution: | 1. The Graduate Faculty of the New School for Social Research, New York, New York, 10011
3. The City College of the City University of New York, 10031, New York, New York
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| Abstract: | The relative efficiency of five techniques of illusion measurement were tested on parametric variations of the Mueller-Lyer and Ebbinghaus figures. The methods of average error, reproduction, and selection from a graded series all showed significant effects of configurational variations. The subjective scaling techniques each failed to measure adequately changes in illusion magnitude for one illusion configuration. The suitability of the tested measures for group administration is also discussed. |
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