Anthony Bateman, M.A., FRCPsych, is Visiting Professor at University College London, Affiliate Professor in Psychotherapy at Copenhagen University, and Consultant to Anna Freud National Centre for Children and Families in London. Peter Fonagy, Ph.D., FBA, FMedSci, FAcSS, is Professor of Contemporary Psychoanalysis and Developmental Science at University College London, and Chief Executive of the Anna Freud National Centre for Children and Families in London.