Joseph Aguayo, PhD, is a training and supervising analyst at the Psychoanalytic Center of California and a guest member of the British Psychoanalytical Society. He holds PhDs in both Clinical Psychology and European History from UCLA. He contributes to leading psychoanalytic journals and has co-edited Wilfred Bion: Los Angeles Seminars and Supervision (2013) and authored Introducing the Clinical Work of Wilfred Bion (2023).

R.D. Hinshelwood is a fellow of the British Psychoanalytic Society and fellow of the Royal College of Psychiatrists; he has previously served as the clinical director at the Cassel Hospital, UK. Hinshelwood is the author of numerous publications, including Melanie Klein: The Basics (2017) and, recently, W.R. Bion as Clinician (2022).

Sira Dermen was a training and supervising analyst of the British Psychoanalytical Society. She was Honorary Senior Consultant at the Portman Clinic and was in full-time private practice. She has written on violence and perversion. She passed away in 2023.

Nicola Abel-Hirsch is a training and supervising analyst of the British Psychoanalytical Society and works in private practice in London. She is the author of numerous publications, including Bion: 365 Quotes (2019), and she is the editor of Hanna Segal's last book, Yesterday, Today and Tomorrow (2007).

Introduction 1. Working Clinically with Groups 2. Tracing the Clinical Trajectory and Technical Relevance of Bion's Cases and Theorizing from the 'Psychosis' Period-(1950-1957) 3. The Psychosis Papers, (1958-1959) 4. Clinical Restlessness: The 1960s 5. Wilfred Bion's Clinical Seminars in North and South America and Europe-1967-1978: A Clinical Method of Enquiry as an Implicit Theory of Psychoanalytic Technique 6. The Brazilian Clinical Seminars 7. Conclusions on Bion's Method of Clinical Enquiry: Similarities and Differences