Ewart A.C. Thomas is a professor of psychology at Stanford University, USA. He was born in Guyana, and received his BSc degree in mathematics from the University of the West Indies, Jamaica, in 1963. He then went to Cambridge University in England, where he received his PhD in statistics in 1967. After research and teaching posts at University College London and the University of Michigan, he joined the Stanford faculty in 1972. Thomas teaches undergraduate and graduate courses in statistics and, working with many research collaborators, he tries to develop model-based descriptions of behavior and, in this way, construct theoretically meaningful summaries of data sets that are sometimes quite large.
He has served as chair of the psychology department, and as dean of the University's School of Humanities and Sciences (1988-1993). He received an honorary doctorate from the University of the West Indies (1989), a Distinguished Teaching Award from the Associated Students of Stanford University (2002), a Bass University Fellowship in Undergraduate Education (2013), and a Dean’s Award for Distinguished Teaching (2016). Thomas was a visiting professor of mathematics at the University of Guyana in 1977, and at the University of the West Indies in 1995. In 2008 he was the Ralph and Claire Landau Visiting Professor of Psychology at The Chinese University of Hong Kong.