Leonard A. Jason (IMAGE) DePaul University Caption Leonard A. Jason is a DePaul University psychology professor who has studied chronic fatigue syndrome primarily in adults for the past 30 years. He also is director of the Center for Community Research in DePaul's College of Science and Health. Credit DePaul University/Jamie Moncrief Usage Restrictions None License Licensed 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.