Donald H. Baucom is Distinguished Professor of Psychology and Neuroscience at UNC-Chapel Hill. He is one of the developers of cognitive-behavioural couple therapy and its application to treating relationship distress and psychological and medical concerns in one partner. He is an active researcher, clinician, teacher, trainer, and supervisor in the area of couple functioning. Melanie S. Fischer is a clinical psychologist at the Institute of Medical Psychology at the University Hospital Heidelberg. Her research specializes in psychopathology in a relationship context and the development, evaluation, and dissemination of couple-based treatments. She also is a clinician and provides training and supervision in couple therapy in Germany, the U.S., and England. Sarah Corrie is a Consultant Clinical Psychologist and Programme Director at Central and North West London NHS Foundation Trust and Royal Holloway University of London. She is a trainer and supervisor in cognitive-behavioural couple therapy, a Visiting Professor at Middlesex University and a Fellow of the British Association for Behavioural & Cognitive Psychotherapies. Michael Worrell is a Consultant Clinical Psychologist and Head of Department, CBT training programmes, Central and North West London NHS Foundation Trust and Royal Holloway University. He is Visiting Professor at Regent’s University London. Michael works clinically with couples and is a trainer and clinical supervisor in cognitive behavioural couple therapy. Sara E. Boeding is a clinical psychologist in the Durham VA Health Care System. She is an active clinician and supervisor with a specialty in couple-based interventions for relationship distress and psychopathology. She has trained others in couple-based interventions both locally and internationally.