title: Hereditary components of response to the double trapezium illusion.
mesh_terms: D002648:Child; D005260:Female; D005556:Form Perception; D005826:Genetics, Medical; D006801:Humans; D007088:Illusions; D008297:Male; D011247:Pregnancy; D012858:Size Perception; D014427:Twins; D014796:Visual Perception