What is the author's style in A Gathering of Old Men by Ernest Gaines?

Because the story unfolds in real time, the narrators mostly speak in the present tense and reserve the past tense for instances when they recount the history of certain people and events. The language incorporates the use of local color, a technique which relies heavily on dialect and colloquialism. Many of the terms and phrases used are specific to a character’s life and circumstances and are not always used in the grammatically correct fashion. Even familiar words taken on different forms from narrator to narrator and won’t necessarily be spelled or used in the same way.