What is the author's style in Sister Carrie by Theodore Dreiser?

Dreiser uses a third person omniscient point of view to tell the story of his heroine, Carrie. Through this point of view, Dreiser provides readers with insight into not only Carrie's thoughts but also those of all his characters. One example of this is found in chapter twenty-seven, when Hurstwood discovers a note from Carrie and later steals money from his employer's safe. Dreiser portrays Hurst-wood's distorted thinking as well as Carrie's confusion over Hurstwood's actions.