Summary
The well-known visual effect of seeing an isolated, point on the rim of a rolling wheel as moving in a cycloidal track was used for a study of visual vector analysis under non-redundant conditions.
Under actual experimental conditions a mean difference of about 20% was found between the mathematically predicted and the perceptual vector analysis. A considerable interperson variation in deviation from the analysis was found. Some Ss showed a deviation of only a few per cent from the mathematically correct response.
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This investigation was made possible by grants from the Swedish Council for Social Science Research.
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Johansson, G. Vector analysis in visual perception of rolling motion. Psychol. Forsch. 36, 311–319 (1974). https://doi.org/10.1007/BF00424568
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DOI: https://doi.org/10.1007/BF00424568