Spontaneous measurement in young children: a re-examination.
D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003071:Cognition; D004215:Distance Perception; D005260:Female; D006225:Hand / Q000502:physiology; D006801:Humans; D008297:Male; D009043:Motor Activity; D009949:Orientation; D012858:Size Perception; D013028:Space Perception; D013647:Task Performance and Analysis; D014796:Visual Perception