Brian D. Haig is a Professor in the Department of Psychology at the University of Canterbury. He has published extensively on the conceptual foundations of behavioral research methods. He is the author of Investigating the Psychological World (MIT Press, 2014) and, with Colin W. Evers, Realist Inquiry in Social Science (Sage, 2016). He is a Fellow of the Association for Psychological Science and the New Zealand Psychological
Society.