Christina Richards is a Senior Specialist Psychology Associate and a Clinical Research Fellow within the NHS. She is a member of the British Association for Counselling & Psychotherapy (BACP) and an Associate Fellow of the British Psychological Society. As well as being an activist and writer she lectures on trans, non-binary and other genders; sexualities; and critical mental health.

Walter Pierre Bouman is a medical doctor, psychiatrist, sexologist and psychotherapist specialising in gender and sexuality. He is Head of Service at the Nottingham National Centre for Gender Dysphoria, Deputy Editor of Sexual and Relationship Therapy - International Perspectives on Theory, Research and Practice - and currently Treasurer and Executive Board member of World Professional Association for Transgender Health (WPATH).

Meg-John Barker is a writer, therapist, and activist-academic specialising in gender, sexuality, and relationship diversity. Meg-John is a senior lecturer in psychology at the Open University and United Kingdom Council for Psychotherapy (UKCP) accredited psychotherapist, and has over a decade of experience publishing on these topics including the book Rewriting the Rules.

Presents the first academic and practitioner comprehensive collection of diverse perspectives on the field of non-binary genders

Outlines a basis for good practice in working with non-binary individuals

Critically considers intersections between sexuality and gender; practice and identity

Questions, where appropriate, the nature or reality of the boundaries between sexuality and gender

Chapter 1: Introduction.- Section 1. Societies.- Chapter 2: History and Cultural Diversity.- Chapter 3: Non-Binary Activism.- Chapter 4: Academic Theory.- Chapter 5: Law.- Section 2. Minds.- Chapter 6: Psychotherapy.- Chapter 7: Psychiatry.- Chapter 8: Psychology.- Section 3. Bodies.- Chapter 9: Child and adolescent endocrinology.- Chapter 10: Adult Endocrinology.- Chapter 11: Chest surgeries.- Chapter 12: Surgery for bodies commonly gendered as male.- Chapter 13: Genital surgery for bodies commonly gendered as female.- Chapter 14: Future Directions.