What is the author's style in The Man Who Lived Underground by Richard Wright?

Wright's earliest autobiographical writings show that he was fascinated with the great novels of naturalism of the late nineteenth and early twentieth centuries, especially the work of Theodore Dreiser.

The foundation of naturalism is the belief that people are a part of the natural world, just as animals are. They are acted upon by forces in their environment which they cannot understand or control. Actions that appear to be acts of will are really reactions to external forces