Individual differences in facial expressivity: Social function, facial anatomy and evolutionary origins Bridget Waller, Nottingham Trent University Communicating with others via the face is crucial for navigating social interactions. We know surprisingly little about how individuals differ in this ability and whether such differences impact on individual lives. In part, this could be due to an historical focus on the universal nature of facial expression, assigning individual difference to random ‘noise’. There is also limited data from real-life social interactions to test hypotheses. We are exploring whether individual differences in facial expressivity equip individuals’ differentially to engage with their social environment, resulting in differences in size and quality of an individual’s social network. We combine psychological, anatomical and cross-species methods in an interdisciplinary investigation of individual differences in facial expressivity. ON SITE & https://unige.zoom.us/j/69543549208?pwd=MHhZTmJSakltcE1CRWJWdVlMUVROUT09 Meeting ID: 695 4354 9208 Passcode: 395867