Andrew F. Hayes (Ph.D., Cornell University, 1996; B.A. San Jose State University, 1991) is Professor of Quantitative Psychology at The Ohio State University. His work on statistical methods, including moderation and mediation analysis, has been published in such journals as Psychological Methods, Behavior Research Methods, Multivariate Behavioral Research, Psychological Science, and the British Journal of Mathematical and Statistical Psychology, as well as in various edited books. He is the author of "Introduction to Mediation, Moderation, and Conditional Process Analysis" (The Guilford Press), "Statistical Methods for Communication Science" (Routledge) and "Regression Analysis and Linear Models" (co-authored with Richard Darlington). He teaches on the topics of his books throughout the world. Current course offerings can be found at http://www.processmacro.org/workshops.html