Assimilation and contrast in the parallel lines illusion?
Judgments of 40 undergraduates indicated that the assimilative character of the parallel lines illusion was destroyed at large values of both context line length and separation of context and center line variables. Accommodation of a portion of these results requires a modification of Brigner's (1977) theory of perception of illusory extent.
D004193:Discrimination Learning; D004215:Distance Perception; D006801:Humans; D007088:Illusions; D009903:Optical Illusions; D012858:Size Perception