Joan DeJean's books reflect her areas of research: the history of women's writing in France ("Tender Geographies: Women and the Origins of the Novel in France"); the history of sexuality ("Fictions of Sappho, 1546-1937"); the development of the novel ("Literary Fortifications"; "Libertine Strategies"); and the cultural history and the material culture of late 17th- and early 18th-century France ("Ancients against Moderns: Culture Wars and the Making of a Fin de Siecle"; "The Essence of Style"; "The Age of Comfort").