The effects of verbal reinforcement on children's performance as a function of type of task.
D000124:Achievement; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D009042:Motivation; D009048:Motor Skills; D011340:Problem Solving; D012054:Reinforcement, Psychology; D013312:Stress, Physiological