Conservation, seriation, and transitivity performance by retarded and average individuals.
D000328:Adult; D003073:Cognitive Dissonance; D003210:Concept Formation; D005260:Female; D006801:Humans; D007088:Illusions; D008607:Intellectual Disability; D008297:Male; D008568:Memory; D012691:Serial Learning; D012858:Size Perception; D014163:Transfer, Psychology