Benner's stages of clinical competence outlines 5 levels that nurses pass through in developing skills: novice, advanced beginner, competent, proficient, and expert. A novice has no experience and requires cues, while an advanced beginner has some experience but still requires occasional cues. A competent nurse has 2-3 years experience, is efficient, and works without cues. Proficient nurses understand situations holistically and can modify plans in response to typical events. Expert nurses have an intuitive understanding and focus accurately without considering alternatives.