Images of the actor Sterling Hayden (IMAGE) University of Bristol Caption These images are of the actor Sterling Hayden, taken from the public domain movie 'Suddenly' (Bassler & Allen, 1954) - to clarify these are not images actually used in the study, but are an illustrative example of the sort of images used, which show different facial expressions. Credit Public domain 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.