In Painting Gender, Constructing Theory, Marcia Brennan examines how Stieglitz and the critics drew on early-twentieth-century discourses on sex and the psyche, particularly the theories of Sigmund Freud and Havelock Ellis, to characterize the artworks of the Stieglitz circle. Critics routinely described the often highly abstracted paintings of Georgia O'Keeffe, Arthur Dove, John Marin, Marsden Hartley, and Charles Demuth as transparent displays of the most intimate aspects of the self, taking both subject matter and painterly form to be guided by the artist's own gendered and psychic energies.

Focusing on the key historical criticism and artworks, Brennan shows how the identities of all five Stieglitz circle artists were presented in terms of the masculinity and femininity, and the heterosexuality and homosexuality, thought to be embedded in their work. Brennan also discusses Stieglitz's relation to competing artistic and critical movements, including Thomas Hart Benton's regionalist art and Clement Greenberg's reformulation of formalism. Arguing that American formalist criticism consisted of a complex and paradoxical mixture of corporeality and disembodied transcendence, Brennanprovides insight not only into the works of the Stieglitz circle but into the development of formalist criticism itself.