Dr. Sarah Riddick is Assistant Professor and Director of the Professional Writing program in the Department of Humanities & Arts at Worcester Polytechnic Institute, where she teaches course on rhetoric and writing. Her research and teaching focus on rhetorical audience studies in relation to participatory writing cultures, digital rhetorics, emergent media, and social movements. Her current projects explore how online audience engagement can inform contemporary approaches to the rhetorical tradition, such as her study of ephemeral digital fields in her recent Computers and Composition article, “Deliberative Drifting: A Rhetorical Field Method for Audience Studies on Social Media.” She regularly edits for rhetoric and writing journals, such as her recent tenure as Managing Editor of Praxis: A Writing Center Journal and her ongoing tenure as a copy editor for Enculturation: A Journal of Rhetoric, Writing, and Culture. She has presented her work at several national and international conferences, including the Rhetoric Society of America, the National Communication Association, and the International Writing Centers Association. She holds a PhD in English with a concentration in rhetoric and writing from the University of Texas at Austin, an MA in Comparative Literature from University College London, and BAs in English and Spanish with a minor in creative writing from the Honors College at Virginia Commonwealth University.