Experimenter role effects on children's task performance and perception.
D000328:Adult; D000704:Analysis of Variance; D002648:Child; D002652:Child Behavior; D004192:Discrimination, Psychological; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills; D010551:Personality; D012056:Reinforcement, Social; D012737:Sex Factors; D012938:Social Perception