Her research focuses on questions of identity, invention, and cross-audience communication. Her scholarship has appeared in Rhetoric Society Quarterly, College English, Argumentation and Advocacy, Computers and Composition Online, Currents in Electronic Literacy, the Journal of Business and Technical Communication, and Technical Communication. Fernheimer is also a founding member and leader of Klal Rhetorica, an international scholarly organisation that explores issues of Jewish discourse, identity, and culture.