Ifs and Buts (IMAGE) Yale University Caption Yale researchers show that monkeys can make the same sort of "what if" mental notes that humans do, such as in this game of rock paper scissors. Credit Courtesy of Yale University 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.