Sleep and Emotion Processing in Adolescent Post-traumatic Stress Disorder

This study looks at how sleep affects how teenagers with PTSD (post-traumatic stress disorder) process emotions. Researchers will compare sleep patterns and emotional responses in teens who have PTSD, teens who experienced trauma but don't have PTSD, and healthy teens with no trauma history. **You may be eligible if...** - You are between 15 and 18 years old - You can read and speak English - A parent or guardian can provide consent for you to participate - You are willing to have your study visits recorded (recordings deleted within one month) - For PTSD participants: you have experienced at least one traumatic event and currently meet criteria for severe PTSD - For trauma-exposed participants: you have experienced a traumatic event but do not have PTSD **You may NOT be eligible if...** - You are pregnant - You are already enrolled in another clinical trial - Your caregiver or you are unable to provide informed consent - You have conditions that would make it unsafe for you to participate (as assessed by the research team) Talk to your doctor to see if this trial is right for you.