Tracy Brown and Francesca Filbey (IMAGE) University of Texas at Dallas Caption Psychology doctoral student Tracy W. Brown and Dr. Francesca Filbey studied whether poorer learning and memory performance in individuals with cannabis use disorder are due to cannabis-related sleep problems. Credit University of Texas at Dallas photo Usage Restrictions n/a License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.