What is the author's style in Giants in the Earth by Ole Edvart Rolvaag?

Giants in the Earth comprises two books, or parts, each of which ends with death or near-death. The novel is unique in its emphasis on psychology and character development, as opposed to plot and incident. Patrick D. Morrow is one of many critics who see the novel as a tragedy. He explains its form as "ten chapters of five well-defined acts, adhering to the tragic rhythm of exposition, conflict, crisis, and catastrophe."