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Judgmental model of the Ebbinghaus illusion

Judgmental model of the Ebbinghaus illusion

Authors :
Dominic W. Massaro
Norman H. Anderson
Source :
Journal of Experimental Psychology. 89:147-151
Publication Year :
1971
Publisher :
American Psychological Association (APA), 1971.

Abstract

Two experiments studied the Ebbinghaus illusion as a function of four stimulus variables: the size of the context circles, the number of context circles, the distance between the context circles and the center circle, and the size of the center circle. The results provided a quantitative test of a judgmental model that considers the Ebbinghaus illusion to be comparative in nature. The context circles, then, serve as standards or yardsticks, and the center circle is judged partly relative to them. The model provided a reasonably good description of the magnitude of the illusion as a function of the several stimulus variables. The center circle in Fig. 1 appears larger when surrounded by small circles, smaller when surrounded by large circles. This figure, known as the Ebbinghaus illusion, or Titchener circles, has seen relatively little systematic study. The present article reports two parametric studies done within a judgmental theory of stimulus integration (Anderson, 1970a, 1970b; Massaro &

Details

ISSN :
00221015
Volume :
89
Database :
OpenAIRE
Journal :
Journal of Experimental Psychology
Accession number :
edsair.doi.dedup.....966afc9606ab9ac0a081f1d8b6e20e64
Full Text :
https://doi.org/10.1037/h0031158