Roger E. Kirk received his Ph.D. in experimental psychology from the Ohio State University and did post doctoral study in mathematical psychology at the University of Michigan. He is a Distinguished Professor of Psychology and Statistics at Baylor University. He founded, and for 25 years, directed Baylor s Behavioral Statistics Ph.D. program and the Institute of Statistics, now the Department of Statistical Science. For the past 29 years he also has been the president of Research Consultants, a statistical consulting corporation. He has published extensively in the areas of statistics, psychoa...