The effect of viewing slant and distance on some visual illusions
- 1 August 1963
- journal article
- Published by Taylor & Francis in Australian Journal of Psychology
- Vol. 15 (2) , 108-112
- https://doi.org/10.1080/00049536308255482
Abstract
This study is concerned with the effect of (a) viewing slant and (b) viewing distance on the perception of 9 illusions which involve straight parallel lines or squares embedded in geometrical patterns. 32 Ss, all of them University students, took part in the experiment. The results show (a) that at a reduced viewing slant the illusory effect disappears with all 9 stimulus figures, the required viewing slant being greater for squares than for parallel lines, (b) that the illusory effects disappear as a function of distance of observation with all 9 stimulus figures, the distance varying from one figure to another. The disappearance of such effects is considered to be a function of fixations on the illusory patterns.Keywords
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