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FIGURE 12-9 Innate Releasing Mechanism in Humans Facial expressions made by young infants in response to expressions made by the experimenter.
From M. Field, R. Woodson, R. Greenberg, D. Cohen, “Discrimination and imitation of facial expression by neonates,” Science 8 October 1982: Vol. 218 no. 4568 pp. 179–181, Figure 1, permission conveyed through Copyright Clearance Center, Inc.