Patricia Benner developed the Level of Expertise Model which categorizes nurses' skills development into 5 levels - novice, advanced beginner, competent, proficient, and expert - based on their clinical experience. As nurses gain experience over time through education and a variety of situations, they progress from relying mainly on rules to intuitively grasping clinical situations. Benner's theory changed how nursing expertise was defined by emphasizing providing excellent patient care rather than job title or prestige.