Ruth M.J.Byrne, FTCD, MRIA (born 1962) is an Irish cognitive scientist and author of several books on human reasoning, including The Rational Imagination: How People Create Alternatives to Reality (2005, MIT Press), Deduction (1991, co-author Philip Johnson-Laird, Erlbaum), and Human Reasoning (1993, with Jonathan Evans & Stephen Newstead, Erlbaum).
Information on her scientific articles is available at Reasoning and Imagination Lab
She is currently the Professor of Cognitive Science, in the Institute of Neuroscience & School of Psychology, Trinity College Dublin, University of Dublin.
She is the former Vice Provost of Trinity College Dublin.