The Handbook of Mentalization-Based TreatmentMentalizing entails attending to mental states in oneself and others in brief, holding mind in mind. It is crucial to interpersonal relationships as well as self awareness and self regulation, and all psychotherapeutic approaches depend on mentalizing capacity. In this comprehensive volume, Jon Allen and Peter Fonagy bring together an international group of experts to clarify the concept of mentalization, review current research and knowledge, and