Basketball Researchers (IMAGE) University of Arizona Caption UA doctoral students Colin Zestcott (left) and Uri Lifshin (right) conducted two studies showing that athletes are subconsciously motivated by reminders of death. The skull shirt worn by Lifshin served as one of those reminders. Credit University of Arizona Usage Restrictions This visual may only be used in conjunction with reporting/posting of this news release. Image/video credit must be included exactly as indicated. 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.