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THE REGRESSION TO RIGHT ANGLES TENDENCY AND THE POGGENDORFF ILLUSION. I
Author(s) -
HOTOPF W. H. N.,
OLLEREARNSHAW CHRISTINE
Publication year - 1972
Publication title -
british journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.536
H-Index - 92
eISSN - 2044-8295
pISSN - 0007-1269
DOI - 10.1111/j.2044-8295.1972.tb01283.x
Subject(s) - psychology , illusion , orientation (vector space) , optical illusion , deflexion , geometry , cognitive psychology , physics , mathematics , finite element method , thermodynamics
The theory that ‘angle’ visual illusions like the Zöllner and the Poggendorff are due to the lines forming the sides of angles being deflected in such a way as to make the angles nearer to right angles, was tested by obtaining judgements of the orientation of both lines in simplified versions of the Poggendorff and Zöllner illusions. The theory was confirmed, although the deflexion was only slight in the cases of lines in a vertical orientation.