Cognitive processing therapy (CPT) is a manualized therapy used by clinicians to help people recover from post-traumatic stress disorder (PTSD) and related conditions. It includes elements of cognitive behavioral therapy (CBT) treatments, one of the most widely used evidence-based therapies. A typical 12-session run of CPT has proven effective in treating PTSD across a variety of populations, including combat veterans, sexual assault victims, and refugees. Sometimes, a patient may need up to 20 sessions to be effective. CPT can be provided in individual and group treatment formats and is considered one of the most effective treatments for PTSD. A 2018 systemic review found CPT to be moderately effective in treating PTSD compared to other modalities.