About the Author: Marie Masterson, PhD, is an associate professor of early childhood education at Dominican University in River Forest, IL. She is a national speaker; child behavior expert; and educational consultant to state departments of education, schools, childcare centers, social service and parenting organizations. She is a Fulbright specialist and former early childhood specialist for the Virginia Department of Education.Katharine Kersey, EdD, is professor of early childhood education and director emeritus of the Child Study Center at Old Dominion University.