title: Ebbinghaus illusion: effect of figural similarity upon magnitude of illusion when context elements are equal in perceived size.
abstract: The magnitude of the Ebbinghaus illusion has been reported to be greater when test element and context elements are figurally similar as opposed to figurally dissimilar. In the current investigation with 16 observers, illusion magnitude was greater for a figurally similar configuration even though the context elements of the figurally similar configuration were perceived as smaller than the context elements of a figurally dissimilar configuration. Hence, figural similarity appears to have a prepotent effect in the Ebbinghaus illusion.
authors.affiliation: Psychology Department, Appalachian State University, Boone, NC 28608, USA.
authors.forename: J R
authors.initials: JR
authors.lastname: Deni
authors.forename: W L
authors.initials: WL
authors.lastname: Brigner
mesh_terms: D005556:Form Perception; D006801:Humans; D009903:Optical Illusions; D011589:Psychology, Experimental; D012858:Size Perception