An Introduction to Working with Severe Dissociative Disorders with Dr. Andrew Rayner

An Introduction to Working with Severe Dissociative Disorders (OSDD &DID): A Motivational Systems Approach.

2 – Day OnlineWorkshop

Date: 24 – 25 October, 2024

Location: ONLINE

Teaching times:

Start: 9.30 a.m.

Finish: 4.30 p.m.


Earlybird Price (ends 15 September, 2024)  – £299

Standard Price – £349


An Introduction to Working with Severe Dissociative Disorders (OSDD &DID): A Motivational Systems Approach.

Severe Dissociative disorders such as Other Specified Dissociative Disorder (OSDD) and Dissociative Identity Disorder (DID) represent significant challenges to client and therapist alike. There is a distinct lack of Dissociative Disorder training within the mental health professions across many countries; leading to misdiagnosis and inappropriate treatment, which prolongs the very significant suffering of our clients.

Any therapeutic modality needs to be adapted for OSDD & DID; otherwise, the risks of harm to the client may inadvertently increase and the chances of effectiveness are likely to be greatly reduced.
Therefore, there is a need to ensure that therapists working with tap into the pre-existing wisdom in this area and to be able to adapt their standard approaches accordingly.

This workshop will enable therapists to work within the treatment guidance laid out by the International Society for the Study of Trauma and Dissociation (ISSTD, 2011), which emphasises the need to achieve better integrated functioning and the use of a phased approach.
We will share key knowledge and skills to help people to integrate parts of the self through activating the collaborative and compassion motivational systems.

These teaching days will reference case material and practical demonstration where possible. The content will be relevant to all therapeutic modalities but may be particularly helpful for Compassion Focused Therapists.

Key issues that we will cover are:

  • Screening, assessment & diagnostic methods for OSSD & DID
  • Key theoretical models such as Structural Dissociation of the Personality (Van derHart, Nijenhuis & Steele, 2006) and the attachment based model of Liotti (2006)
  • Key treatment principles in OSDD & DID according to ISSTD guidance
  • The relevance of Motivational systems and how these can be tracked and used in therapy
  • How to work with self-attacking parts
  • How to conduct useful dialogue with parts of the personality system
  • How to deal with Specific challenges to the therapeutic relationship & trauma bonding


Fisher, J. (2017). Healing the fragmented selves of trauma survivors: Overcoming internal self-alienation. Routledge. New York & London.
Gilbert, P. (2013). An evolutionary and compassion focused approach to dissociation. In, F. Kennedy, H., Kennerley, & D, Pearson. (eds). Cognitive Behavioural Approaches to the Understanding and Treatment of Dissociation. (190-205). London: Routledge
Van der Hart, O., Nijenhuis, E.R.S., & Steele, K (2006). The Haunted Self. Structural Dissociation & the Treatment of Chronic Traumatization. Norton & Company
International Society for the Study of Trauma and Dissociation. (2011). [Chu, J. A., Dell, P. F., Van der Hart, O., Cardeña, E., Barach, P. M., Somer, E., Loewenstein, R. J., Brand, B., Golston, J. C., Courtois, C. A., Bowman, E. S., Classen, C., Dorahy, M., ¸Sar, V., Gelinas, D. J., Fine, C. G., Paulsen, S., Kluft, R. P., Dalenberg, C. J., Jacobson-Levy, M., Nijenhuis, E. R. S., Boon, S., Chefetz, R. A., Middleton, W., Ross, C. A., Howell, E., Goodwin, G., Coons, P. M., Frankel, A. S., Steele, K., Gold, S. N., Gast, U., Young, L. M., & Twombly, J.]. Guidelines for treating dissociative identity disorder in adults, third revision. Journal of Trauma & Dissociation, 12, 115–187.
Steele, K., Boon, S. & Van der Hart (2017). Treating Trauma-Related Dissociation. A practical, integrative approach. Norton & Company


Dr Andrew Rayner is a Consultant Clinical Psychologist who specialises in Compassion Focussed Therapy (CFT), Complex Trauma and Dissociative Disorders. Andrew is a Clinical Supervisor, guest lecturer and moderator on the Diploma in CFT at the Compassionate Mind Foundation (CMF).

Andrew has spent nearly 20 years working in adult mental health settings both within the NHS in England and in private practice.  He currently works as an associate clinician within the Complex Trauma and Dissociation (CTAD) Clinic, which is one of the few assessment and treatment clinics in the UK that offers specialist service for people with Dissociative Disorders.

Booking workshops & events:

Our workshops and training are available to book through payment by credit/debit card on our website. If you would prefer to request an invoice please contact us on

Terms and Conditions: 

There will be a £50 admin fee for any cancellation after booking and £100 cancellation fee within 14 days of the workshop date. No refunds can be given to cancellations made less than 7 days prior to the workshop date. 

Registration and Invoicing

To request an invoice please contact us.

Please note that information about the event and venue are subject to change and cancellation.

Occasionally, an event may have to be cancelled or postponed. We will inform of you of any changes and cancellations as soon as possible via email.

Unfortunately, we cannot be held responsible for any resulting costs you may incur for travel, accommodation, any other related goods or service or other compensation.

We will confirm the final details of the event, 7-10 days before the start date.

    Event Detail

    October 24, 2024 9:30 am
    October 25, 2024 4:30 pm


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