Eia Asen, MD, FRCPsych, is a consultant child, adolescent, and adult psychiatrist at the Anna Freud National Centre for Children and Families in London, United Kingdom, and is Visiting Professor at University College London (UCL). He was previously Clinical Director of the Marlborough Family Service, a systemically oriented service working with marginalized children, adults, and multiproblem families, which is based in central London and is part of the British National Health Service (NHS). Trained as a systemic psychotherapist, Dr. Asen has been instrumental in developing innovative multifamily therapy approaches that have been implemented internationally. He has authored or coauthored 12 books, as well as many scientific papers and book chapters.

Peter Fonagy, OBE, FMedSci, FBA, FAcSS, is Professor of Contemporary Psychoanalysis and Developmental Science and Director of the Division of Psychology and Language Sciences at University College London (UCL), and is Chief Executive of the Anna Freud National Centre for Children and Families. Dr. Fonagy is Senior Clinical Advisor on Children's Mental Health at NHS England, Director of the UCLPartners Integrated Mental Health and Behaviour Change Programme, Consultant to the Menninger Department of Psychiatry and Behavioral Sciences at Baylor College of Medicine, and Visiting Professor at Yale and Harvard Medical Schools. His clinical interests center on early attachment relationships, social cognition, borderline personality disorder, and violence. A codeveloper of mentalization-based treatment, Dr. Fonagy has published more than 550 scientific papers, 250 chapters, and 20 books.