This document discusses Carl Rogers and his person-centered theory. It outlines key concepts in Rogers' theory including self-concept, congruence, unconditional positive regard, empathy, and the actualization tendency. The document also explains how Rogers' theory influences advanced psychiatric nursing by promoting a client-centered approach and focusing on self-awareness, acceptance, and understanding. Finally, it discusses how Rogers' theory can help nurses develop therapeutic relationships with patients and support personal and behavioral changes.