Those who take on the challenge of working with groups as psychotherapists will find all the essential tools in this book, along with typical difficulties and pitfalls that group dynamics can present. Each chapter is dedicated to group work with trauma patients and research on group therapy. Group psychotherapy is an effective and economical treatment method, yet it is also very demanding. Without a thorough understanding of group dynamics and specific therapeutic applications, fear of groups from the therapist's perspective is entirely justified. This book aims to dispel that fear through a competent presentation of the principles of functioning in therapy groups, practical descriptions of group composition, their typical phases, and expected conflicts.