The Poggendorff Illusion with Subjective Contours-Reference-Cited by-同舟云学术

The Poggendorff Illusion with Subjective Contours

Published:1977-05 Issue:2 Volume:29 Page:219-226
ISSN:0033-555X
Container-title:Quarterly Journal of Experimental Psychology
language:en
Short-container-title:Quarterly Journal of Experimental Psychology

Author:

Day R. H.¹,Dickinson R. G.¹,Jory M. K.¹

Affiliation:

1. Department of Psychology, Monash University, Clayton, Victoria, 3168, Australia

Abstract

Gregory (1972) has claimed that the Poggendorff misalignment effect occurs when the collinear obliques are separated by subjective rather than real contours. He used two figures to demonstrate this variant of the illusion. Two experiments to test the claim are reported. The first showed that apparent misalignment in one of the two original figures is no greater than that with two obliques alone (the oblique line effect), but misalignment in the other is greater than with two oblique lines and than with a control without subjective contours. The second experiment showed that apparent misalignment in the second figure was less than in two control figures without subjective contours. Since this reduced effect was probably due to the nature of the intersection between the oblique and a semi-circular element, the role of subjective contours remains unsettled.

Publisher

SAGE Publications

Subject

General Medicine

Link

http://journals.sagepub.com/doi/pdf/10.1080/14640747708400598

Reference8 articles.

1. The Oblique Line Illusion: The Poggendorff Effect without Parallels

2. The Poggendorff Illusion: Apparent Misalignment which is not Attributable to Apparent Orientation of the Transversals

3. THE COMPONENTS OF THE POGGENDORFF ILLUSION

4. The effects of the motion path and the length of the variable segment in the Poggendorff illusion without parallels

5. Cognitive Contours

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