EMDR tends to be very effective in relieving the negative symptoms associated with trauma. In a study performed by Francine Shapiro called The Role of Eye Movement Desensitization and Reprocessing (EMDR) Therapy in Medicine: Addressing the Psychological and Physical Symptoms Stemming from Adverse Life Experiences (2014), results showed that after just three EMDR sessions, 84% of participants reported a remission of PTSD diagnosis. EMDR will often have a higher success rate for survivors of a single traumatic event than for those who have experienced repeated or multiple instances of trauma when EMDR is performed for the same amount of time. This is due to the increased intensity of the trauma and the need to process multiple events.