Annabel Ness Evans received her Ph.D. in Cognitive Psychology from the University of Alberta. She is currently Professor and Chair of the Department of Psychology at Concordia University College of Alberta. She teaches courses in statistics and directs the B.A. programs in psychology. Her other books are Principles of Behavior Analysis, co-authored with Lyle Grant (PH, 1994) and Methods in Psychological Research, Third Edition (SAGE, 2013). She also does outside consulting which includes graphic design and statistical analysis.