Dr. Persons chaired a symposium titled What Can We Learn About CBT by Studying Trajectories of Change? at the Association for Behavioral and Cognitive Therapies Convention in Washington, DC, November 2018. One of the papers in the panel was: Relationship Between Dropout and Outcome in Naturalistic CBT, authored by Garret G. Zieve (presenter), Jacqueline B. Persons, and Lisa Ann Yu.