[Speed anticipation reaction in the study of mental development of children, with special reference to normal school children and feeble-minded children].
D000293:Adolescent; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis*; D007361:Intelligence Tests; D008297:Male; D013997:Time Factors