My research interests are in sixteenth and seventeenth-century drama and poetry, especially Shakespeare; text and bibliography with especial emphasis on the critical editing of Renaissance drama and the history of Shakespearean editing; history of the book and print culture; authorship and collaboration in Renaissance drama, including formalist and quantitative appraisals of authorial style; Shakespeare in performance, both modern and historical.
I am currently working on a monograph for Oxford University Press entitled Shakespeare and Collaboration.