Zack Boukydis, Ph.D., is a developmental/clinical psychologist whose career has been devoted to research and clinical work with mothers, families, and babies. He is the editor or coeditor of three books: Support for parents and infants: A manual for parenting organizations and professionals (New York: Routledge & Kegan Paul, 1986); Research on support for parents and infants in the postnatal period (New Jersey: Ablex, 1987); and Infant crying: Theoretical and research perspectives (with Barry M. Lester; New York: Plenum Press, 1985), as well as the author of numerous research publications and grants. Throughout his career, Dr. Boukydis's work has focused on the influence of infant crying on parents, the neurobehavioral development of at-risk infants (including preterm and substance-exposed infants), interventions to support families in neonatal intensive care units and mothers and infants in drug treatment programs, and an ultrasound consultation program in which practitioners join with mothers and families in watching their baby during routine ultrasound screens in obstetric clinics. He is a focusing coordinator and focusing-oriented therapist with the Focusing Institute of New York and has developed a special international training program, Focusing-Oriented Parent-Infant Consultation: Bringing Focusing to Work with Parents and Infants. He is also a trainer on the NICU Network Neurobehavioral Scale (NNNS™) in the United States, Europe, and Africa. Dr. Boukydis was a member of the Harris Professional Development Network and was a Fulbright Fellow between the United States and Hungary. Dr. Boukydis is currently on the editorial review board of the Journal of Visualized Experiments and is a reviewer for Acta Paediatrica. He is on the faculty of the Department of Pediatrics, Semmelweis Medical School, and the Institute of Psychology, Eotvos Lorand University, Budapest, Hungary, and is a Visiting Professor, Department of Pediatrics, University of Turku, Turku, Finland.