(1994) Georgette Heyer's Regency romances: serious literature or popular fiction? MA thesis, University of Auckland

(2005) Riding the tosh horse: women writers of popular romance between the wars PhD, University of Birmingham

(1998) The educational potential of romantic fiction PhD, University of Leeds

(1999) In the Words of Girls: The Reading of Adolescent Romance Fiction Doctor of Education, Harvard University

(1988) Changes in Historical Romance, 1890s to the 1980s: The Development of the Genre from Stanley Weyman to Georgette Heyer and her Successors PhD, University of Bradford