title: The effect of anxiety, reinforcement, and intelligence on the learning of a difficult task.
mesh_terms: D000293:Adolescent; D001007:Anxiety / Q000150:complications; D003071:Cognition; D003858:Dependency, Psychological; D006801:Humans; D007360:Intelligence; D009042:Motivation; D010153:Paired-Associate Learning; D011678:Punishment; D012057:Reinforcement, Verbal