Treating trauma in psychosis RCT results: A paradigm shift?


Post-traumatic stress disorder is one of the most common co-morbid conditions in patients with psychotic disorders and negatively influences prognosis. Patients with psychosis are however excluded from effective psychotherapeutic treatment because therapists fear destabilizing the patient and causing psychotic decompensation. There is however no scientific evidence to support this notion.

In the TTIP study 155 patients with a psychotic disorder (MINI+), all receiving Treatment as Usual for their problems of psychosis, and with a comorbid PTSD (CAPS) were randomly assigned to one of the three interventions for PTSD: EMDR, Prolonged Exposure or Waiting List. In the EMDR and prolonged exposure conditions participants received 8 sessions of therapy. Standard protocols were used and the treatments weren’t preceded by stabilising interventions or skills trainings. The first session comprised psycho-education about PTSD and target selection. In sessions 2 to 8 traumas were treated, started with the most distressing experience.

In this lecture the end-of-treatment and 6-month-follow-up data on efficacy and safety will be presented and discussed.






David van der Berg

Original Work Citation

van der Berg, D. (2014, June). Treating trauma in psychosis RCT results: A paradigm shift? In EMDR research symposium (Netherlands track) (Ad de Jongh, Chair). Symposium presented at the 15th EMDR Europe Association Conference, Edinburgh, Scotland



“Treating trauma in psychosis RCT results: A paradigm shift?,” Francine Shapiro Library, accessed June 14, 2021,

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