लेखक: Katharine Kersey

Marie Masterson, PhD, is director of quality assessment at McCormick Center for Early Childhood Leadership and former professor of early childhood education. She is a national speaker, child behavior expert, researcher, and author. She is an educational consultant to state departments of education, schools, childcare centers, and social-service and parenting organizations. Dr. Masterson is a Fulbright specialist and former early childhood specialist for the Virginia Department of Education.