Clinical Research Directory

Inclusion Criteria: * Posttraumatic stress disorder (PTSD) diagnosis * Anxiety Sensitivity Index 3 (ASI-3) scores above 24 * PTSD Checklist for DSM-V (PCL-5) scores above 30 * Understands and speaks English * Access to a smartphone that is connected to the internet Exclusion Criteria: * Score of 24 or lower on the ASI-3 * Score of 30 and below on the PCL-5 * No PTSD diagnosis * Active psychosis * Acute intoxication during study baseline * Enrolled in another treatment research study * Medical illness that would prevent the completion of interoceptive exposure exercises