Cross-modal matching among normal and retarded children.
D002648:Child; D002657:Child Development; D004193:Discrimination Learning; D005260:Female; D005556:Form Perception; D006801:Humans; D008607:Intellectual Disability; D008297:Male; D009949:Orientation; D012858:Size Perception; D013647:Task Performance and Analysis; D014110:Touch; D014785:Vision, Ocular; D014796:Visual Perception