Sian Leah Beilock (/ˈsiən ˈbaɪlɒk/ SEE-ən BY-lok; born January 10, 1976) is a cognitive scientist who is the eighth president of Barnard College and president-elect of Dartmouth College. Previous to serving at Barnard College, President Beilock spent 12 years at the University of Chicago, departing as the Stella M. Rowley Professor of Psychology and Executive Vice Provost. She holds doctorates of philosophy in both kinesiology and psychology from Michigan State University.