Three-dimensional objects versus projected color photographs of objects as stimuli in learning-set formation by retarded children.
D002648:Child; D003116:Color; D003118:Color Perception; D004193:Discrimination Learning; D006801:Humans; D008607:Intellectual Disability; D007858:Learning; D013028:Space Perception
COLOR PERCEPTION; DISCRIMINATION LEARNING; MENTAL DEFICIENCY; SPACE PERCEPTION