Metacognitive Illusion in Monkeys (IMAGE) University of Rochester Caption University of Rochester researchers Jessica Cantlon and Stephen Ferrigno determined that non-human primates exhibited metacognitive illusions after they observed primates completing these series of steps on a computer. Credit Jessica Cantlon and Stephen Ferrigno/University of Rochester 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.