In "The Yellow Wallpaper," the author employs an unreliable narrator. We learn that her husband is a doctor, and he believes her to be sick, a diagnosis with which she does not agree. Since we know that she is meant to be sick, we tend to doubt whether the things she says are accurate representations of reality or not. By providing an unreliable narrator, the author increases the mystery that surrounds the story. Moreover, it makes it very difficult for us to make predictions, which leads us to be very surprised with the outcome of the story.