What is the author's style in The Piano Lesson by August Wilson?

Naturalism is often confused with realism; however, although the two styles both represent "real life," there are important differences between them. Naturalist writers were influenced by scientific and evolutionary theories of human character and of social interaction. One of the central motifs of Naturalist writing is the individual's struggle to adapt to an often hostile environment. Indeed, most Naturalist writers emphasize their characters' environment to such an extent that it becomes an integral element in their narratives. Moreover, their protagonists usually belong to a less fortunate class than their middle-class audience or readership, and the description of their struggle to survive and succeed against all odds usually allows the writer the opportunity to make powerful social criticism.