His research focuses on how changes in journalism affect the ways in which individuals select, use and make sense of news. Geidner is interested in all aspects of the changing media landscape, but has focused on social media, interactive graphics/data visualization and news monetization. Geidner is also director of the Medal of Honor Project, an undergraduate service-learning project at the University of Tennessee. Before joining the faculty at UT, Geidner earned a Ph.D. in mass communication from the Ohio State University (2011), a M.A. in telecommunications from Ball State University (2007), and a B.A. from Youngstown State University (2005).