What is the author's style in That Evening Sun by William Faulkner?

Quentin Compson, one of Faulkner's most memorable characters, narrates the story. In the story, he is a nine-year-old boy, but as a narrator he is twenty-four. Faulkner has Quentin narrate in both voices: the story begins in the voice of the adult Quentin, but soon switches to the voice of the younger Quentin. It is difficult to tell when the narrator reverts to his younger self, because much of the story is simply reported dialogue, but many of the sentences in the first part of the story are long and filled with adjectives and conjunctions. By Part II, the sentences are short, declarative, and often skip around conceptually, suggesting the mind of a young boy.