Eye movement desensitization and reprocessing (EMDR) is a form of psychotherapy used to treat post-traumatic stress disorder (PTSD) by processing traumatic memories. It was developed by Francine Shapiro and uses eye movements combined with recalling a traumatic memory to reduce the emotional intensity of that memory. The therapy process involves identifying a disturbing memory or event, developing negative and positive beliefs about it, and using sets of eye movements while focusing on the memory to install the positive beliefs. EMDR addresses past, present and future aspects of traumatic memories over multiple therapy sessions to fully process the memory.