Matthew Stephens (born 1970) is a Bayesian statistician and professor in the departments of Human Genetics and Statistics at the University of Chicago. He is known for the Li and Stephens model as an efficient coalescent. Education Stephens has a PhD from Magdalen College, Oxford University where his advisor was Brian D. Ripley. He then went on to work with Peter Donnelly as a postdoctoral researcher. Career Stephens conducted postdoctoral research with Peter Donnelly at the University of Oxford. It was there that he developed STRUCTURE along with Jonathan Pritchard, a widely used computer program for determining population structure and estimating individual admixture. He then went on to develop the influential Li and Stephens model as an efficient model for linkage disequilibrium. Awards Stephens was awarded the Guy Medal (Bronze) in 2006. Notes 1970 births British statisticians Population geneticists Statistical geneticists Living people 20th-century British mathematicians 21st-century British mathematicians Genetic epidemiologists