Cheri L. Marmarosh is a licensed psychologist and Associate Professor of Professional Psychology at George Washington University, USA. She has published numerous empirical and theoretical articles that focus on how group and individual therapy facilitate change and is the author of Attachment in Group Psychotherapy (with Markin and Spiegel, 2013). She is an associate editor of Psychotherapy and a Fellow of the American Psychology Association, Division 29 (Psychotherapy) and Division 49 (Group Psychotherapy). She has a private practice in Washington, DC.

Introduction - Attachment in Group Psychotherapy: Bridging Theories, Research, and Clinical Techniques1. Augmenting the Sense of Attachment Security in Group Contexts: The Effects of a Responsive Leader and a Cohesive Group2. Mentalizing, Attachment, and Epistemic Trust in Group Therapy3. Group Psychotherapy as a Neural Exercise: Bridging Polyvagal Theory and Attachment Theory4. Attachment Anxiety and Attachment Avoidance: Members' Attachment Fit with Their Group and Group Relationships5. Feeling Worse Before Feeling Better: A Case of Increased Disorganized Mental States Following Group Psychotherapy6. Establishing a Secure Base to Increase Exploration of Diversity in Groups7. Attachment and Interpersonal Theory and Group Therapy: Two Sides of the Same Coin8. Commentary: How Understanding Attachment Enhances Group Therapist Effectiveness