What's behind a monkey's poker face? (IMAGE) Kyoto University Caption Marmosets have fewer facial movements than humans but more than expected. Credit KyotoU/Catia Correia-Caeiro 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.