results were as follows : ( 1 ) 28 ( 68 % ) of the infants and young children initially oriented towards the source of the auditory stimulus , ( 2 ) only a few of the subjects who did not initially orient could be taught to respond , ( 3 ) of the children who initially oriented or were taught to respond , thresholds were obtained on a large number ( 81 % ) in one visit , and ( 4 ) a systematic relationship was demonstrated between consistency of subject response using the vra technique and bsid mental age equivalent with 10 months being the critical age for determining the potential success of the procedure .
C0021270
infants
C0008059
children