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Welcome to my website. I am Professor of Communication at the University of Arizona. I also hold appointments in the Department of Psychology and the Arizona Cancer Center. I earned my M.S. in Communication from Illinois State University and Ph.D. in Communication Studies from the University of Texas at Austin.

My research is situated in the areas of health communication, social influence, and communication and technology. I am interested in better understanding how and why messages influence people, particularly in health contexts and when using communication technologies. My work in recent years has primarily focused on social support, though I routinely study digital coping, incivility, persuasion resistance, and related topics. I am especially interested in leveraging computational social science techniques to explore the dynamic communication processes involved in these phenomena. I currently serve as an editorial board member at Communication Monographs, Communication Research, European Journal of Health Communication, Health Communication, Human Communication Research, Human Communication & Technology, Journal of Applied Communication Research, Journal of Communication, and Journal of Computer-Mediated Communication