Cognitive Processing Therapy (CPT) and Eye Movement Desensitization and Reprocessing (EMDR) are two different evidence-based treatments used for individuals who have experienced traumatic events or have post-traumatic stress disorder (PTSD).

EMDR is a therapy that involves guided eye movements, which are thought to help desensitize traumatic memories and reprocess them in a way that reduces their emotional impact. This therapy also involves other techniques like visualization and tapping to help patients process and cope with their traumatic experiences.

On the other hand, CPT is a cognitive-behavioral therapy that focuses on changing the way individuals think about their trauma. It helps patients understand the thoughts and beliefs they have about themselves and their trauma, and challenges any negative or distorted beliefs. This therapy also involves structured writing assignments to help individuals process their traumatic experiences.

Both CPT and EMDR have been shown to be effective treatments for PTSD, and the choice between them depends on individual needs and preferences. Some individuals may prefer the structured and focused approach of CPT, while others may prefer the more experiential nature of EMDR. It's also possible for individuals to receive a combination of both treatments, depending on their needs and goals.  EMDR is more focused on desensitizing the emotional response to traumatic memories, while CPT is more focused on changing the way individuals think about their trauma. EMDR also involves physical movements, while CPT involves writing assignments.