sentences:  In 1977, "Science" published the ground-breaking paper "Imitation of Facial and Manual Gestures by Human Neonates" by Meltzoff, who was still at Oxford, and M. Keith Moore of the University of Washington.According to the abstract,
  
  Infants between 12 and 21 days of age can imitate both facial and manual gestures; this behavior cannot be explained in terms of either conditioning or innate releasing mechanisms.Such imitation implies that human neonates can equate their own unseen behaviors with gestures they see others perform.