“On the practical side, I like the integration with behavioral activation and other techniques in a modular fashion that is alluded to. I also like that the limitations of group CBASP are clearly stated. The description of the use of transference hypothesis, IDE, and contingent personal responsivity in group CBASP is very important. I also find the examples helpful as applying IDE is challenging. I find the structure of the session description very helpful. I also like how the CBASP model and the circumplex model are introduced in the group setting.”—Jan Philipp Klein, MD, Department of Psychiatry and Psychotherapy, Lübeck University."CBASP is a promising psychological therapy in the context of treating persistent depression. The authors provide a simply excellent practical translation of how to deliver CBASP in a group setting. Everything that mental health professionals could need to deliver this therapy is provided with clear theoretical grounding combined with clear practice guidelines supported by examples of paperwork to support the group endeavor."—John Swan, Cognitive Behavioural Psychotherapist; Clinical Senior Lecturer and Course Director (CBP Training Programme), Division of Neurosciences and Medical Education Institute College of Medicine, Dentistry and Nursing University of Dundee.