Alicia F. Lieberman, PhD, is Irving B. Harris Professor of Infant Mental Health and Vice Chair for Academic Affairs in the Department of Psychiatry, University of California, San Francisco, and is Director of the Child Trauma Research Project at San Francisco General Hospital. She directs the Early Trauma Treatment Network, a collaborative of four university-based programs that is a center of the Substance Abuse and Mental Health Services Administration (SAMHSA) National Child Traumatic Stress Network. She is president of the board of directors of Zero to Three: The National Center for Infants, Toddlers and Families. Dr. Lieberman is the author ofThe Emotional Life of the Toddlerand senior author ofLosing a Parent to Death in the Early Years: Guidelines for the Treatment of Traumatic Bereavement in Infancy and Early ChildhoodandDon’t Hit My Mommy!: A Manual for Child-Parent Psychotherapy with Young Witnesses of Family Violence, among numerous other publications. Her major interests include infant mental health, early trauma, and closing the service gap for minority and underserved young children and their families. nbsp; Patricia Van Horn, JD, PhD, is Associate Clinical Professor in the Department of Psychiatry at the University of California, San Francisco, and Associate Director of the Child Trauma Research Project. She serves as technical assistance provider and clinical consultant to the San Francisco Safe Start Initiative and has trained clinicians nationally and abroad in child-parent psychotherapy through the SAMHSA National Child Traumatic Stress Network and the Safe Start Promising Practices Initiative. She is the author of a child trauma training curriculum for advocates serving women and children affected by domestic violence and a coauthor ofDon’t Hit My Mommy!andLosing a Parent to Death in the Early Years.