title: Time estimation and hyperactivity, replication.
abstract: Three groups of boys included 135 of normal IQ, showing normal activity; 6 were hyperactive and of normal IQ, and 6 showed normal activity but low IQ. Their ability to estimate a 30-sec. interval showed only the 6 normally active boys of low IQ had significantly different elapsed and estimated times. Time estimation is not clinically useful for identifying hyperactive boys.
mesh_terms: D000293:Adolescent; D002648:Child; D006801:Humans; D006948:Hyperkinesis / Q000175:diagnosis / Q000523:psychology*; D007600:Judgment; D008297:Male; D013998:Time Perception