School of Communication and Department of Psychology
The Ohio State University
Columbus, OH 43210, U.S.A.
hayes.338@osu.edu

I am an Associate Professor at The Ohio State University.  My research focuses on linear models, with an emphasis on resampling methods of inference. Specific areas of investigation include the effects of heteroscedasticity on inference, multilevel models, and statistical approaches to assessing mediation.  I hold a Ph.D. in Psychology from Cornell University (1996) and a B.A. in Psychology from San Jose State University (1991).

At Ohio State, I am the statistical methodologist in the School of Communication and a member of the Quantitative Psychology faculty in the Department of Psychology. I am Editor-in-Chief of the journal Communication Methods and Measures, I coedited a special issue of Human Communication Research on multilevel modeling, and I am the author of one statistical methods book ("Statistical Methods for Communication Science", Lawrence Erlbaum Associates) coeditor of a second ("The Sage Sourcebook of Advanced Data Analysis Methods for Communication Research", Sage Publications), and my third book ("Introduction to Mediation, Moderation, and Conditional Process Modeling: A Regression-based Approach", Guilford Press) will be released in the first half of 2013.  My methodology work is published in such locations as Psychological Methods, Multivariate Behavioral Research, Behavior Research Methods, Psychological Science, British Journal of Mathematical and Statistical Psychology, Journal of Educational and Behavioral Statistics, Journal of Statistical Computation and Simulation, Human Communication Research, and Communication Monographs.

I teach courses at the graduate and undergraduate level on research design and data analysis.  Graduate-level courses include Multiple Regression, Moderation and Mediation Analysis, Structural Equation Modeling, and various miscellaneous special topics.  I regularly conduct workshops on moderation and mediation analysis at institutions throughout the world.  I also teach for Statistical Horizons in Philadelphia.

Looking for PROCESS?  Here it is.

Upcoming workshops and lectures:

I will be co-teaching a 5-day course with Kristopher Preacher on moderation and mediation analysis using PROCESS in Philadelphia through Statistical Horizons, July 15-19, 2013.  Enrollment and tuition information can be found here.

I will be conducting a two-hour workshop on multilevel mediation analysis at the annual convention of the  Association for Psychological Science in Washington DC, 23 May 2013, 13.30 to 15.20 [registration form]

I will be conducting a half-day workshop on conditional process analysis using PROCESS at the annual convention of the Association for Education in Journalism and Mass Communication in Washington DC, 7 August 2013, 1.00 to 5.00

White papers, recently accepted for publication but not yet printed, and working papers: (email me at hayes.338@osu.edu for a copy)

Hayes, A. F. & Scharkow, M. (in press). The relative trustworthiness of tests of the indirect effect in statistical mediation analysis: Does method really matter?  Psychological Science.

Hayes, A. F. (2013). A simple test of moderated mediation.  Manuscript submitted for publication.

Hayes, A. F., & Preacher, K. J. (2013). Statistical mediation analysis with a multicategorical independent variable.  Unpublished white paper.