Co-author (IMAGE) University of Massachusetts Amherst Caption Trisha Dehrone is a National Science Foundation Graduate Research Fellow pursuing her Ph.D. in the Psychology of Peace and Violence Program at UMass Amherst. Credit UMass Amherst Usage Restrictions None 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.