Dr. Larry B. Wallnau is Professor Emeritus of Psychology at The College at Brockport, State University of New York. The recipient of grants and awards in both teaching and, Dr. Larry has published quite a few research articles primarily on the effect of psychotropic drugs. With Dr. Frederick J Gravetter, he has co-authored previous editions of Statistics For The Behavioral Sciences, now in its tenth edition, and Essentials Of Statistics For The Behavioral Sciences, now in its 10th edition.