Success-failure reactions in mentally retarded children.
D000124:Achievement; D000367:Age Factors; D005120:Extraversion, Psychological; D006801:Humans; D008607:Intellectual Disability; D007439:Introversion, Psychological; D009042:Motivation; D010465:Perception; D012054:Reinforcement, Psychology; D012649:Self Concept; D012691:Serial Learning