CLIFF OR STEP? POSTURE-SPECIFIC LEARNING AT THE EDGE OF A DROP-OFFKretch, K. S.Karasik, L. B.Adolph, K. E.Author informationDept. of Psychology, New York University, New York, NY 10003[email protected]Developmental Psychobiology 51(7):p 592, November 2009.Copyright © 2009 John Wiley & Sons, Inc.