Dr Joel Vos, PhD, Cpsychol trained as a Clinical and Health Psychologist and Philosopher, and works as researcher, lecturer and therapist in Counselling Psychology.Dr Biljana van Rijn, TSTA (Psychotherapy), UKCP Registered Psychotherapist and HCPC Registered Counselling Psychologist. Biljana is a TA psychotherapist and a supervisor involved  in the development of research both at Metanoia Institute in the UK,  and in the wider professional field. She led the development of research as a Chair of the European Association for Transactional Analysis (EATA) Theory Development and Research committee. She is currently a President of the UK Chapter of the Society for Psychotherapy Research. Biljana is also a recipient of the 2019 ITAA research award for her contributions to research in Transactional Analysis.Biljana has published a body of research within transactional analysis, psychotherapy process, and clinical supervision, as well as chapters and books on reflective practice, clinical assessment and formulation.

• PART I. Background1. Introduction 2. The Schools of TA 3. Overview of Research on TA PART II. Evidence-based conceptual model of TA-psychotherapy4. Clinical phenomenon: What are the client’s problems? 5. Aetiological model: How did the client’s problems start? 6. Therapeutic Aims and Outcomes: What can be achieved in TA? 7. Therapeutic mechanisms: How can therapists help clients? PART III. Evidence-based TA Psychotherapeutic Competencies8. Assessment Competencies 9. Relational Competencies 10. Structuring Competencies11. Experiential Competencies 12. Integrative-therapeutic Competencies PART IV. TA-psychotherapy for Specific Disorders13. Depressive Disorders 14. Anxiety Disorders 15. Trauma Disorders16. Cluster-A Personality Disorders (paranoid, schizotypical, schizoid)17. Cluster-B Personality Disorders (narcissistic, antisocial, borderline, histrionic)18. Cluster-C Personality Disorders (obsessive-compulsive, dependent, avoidant)19. Neurodiversity20. Behaviour problems and delinquency 21. Problematic use of alcohol or drugs22. Physically Ill Clients 23. Eating Disorders24. Sexual Disorders25. Existential Concerns and Self-development Part V. Evidence-based TA Treatment Manual26. Overview of TA-Treatment27. Establishing Relationship, Initial Assessment and Contract (sessions 1-2)28. Systematic Assessment (sessions 3-7)29. Experiential Processing in the Here-and-now (sessions 8-12)30. Making Decisions and Changes in Daily Life (Sessions 13-16)