Harold Gouzoules, Emory University (IMAGE) Emory Health Sciences Caption Harold Gouzoules, a professor of psychology at Emory University, is studying the origins of screams and the role they played in human evolution. Credit Emory University Usage Restrictions Must include credit 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.