Examination of Pressey's assimilation theory of the Poggendorff illusion.
D000293:Adolescent; D000375:Aging; D001288:Attention; D002648:Child; D004192:Discrimination, Psychological; D005556:Form Perception; D006801:Humans; D007088:Illusions; D008607:Intellectual Disability / Q000235:genetics; D008297:Male; D009949:Orientation; D010469:Perceptual Distortion; D011582:Psychological Theory; D012858:Size Perception; D013028:Space Perception; D014796:Visual Perception