Examples of naturalism in literature include Frank Norris' "Vandover and the Brute" and "McTeague," Emile Zola's "L'Assommoir," Edith Wharton's "The House of Mirth" and Ellen Glasgow's "Barren Ground." Some other writers that practiced naturalism include Jack London, Stephen Crane and Theodore Dreiser.
Naturalism in literature ascribes to using scientific principles to determine the nature of human beings. It is believed that the term was first brought to use by Emile Zola, who contended that his innovative style of fiction writing was the result of employing the scientific method. A few themes associated with naturalism are survivalism, man's struggle against nature and environmental and heredity forces, determinism and lack of free will.