Hildegard Peplau developed an interpersonal relations theory that describes the nurse-client relationship through 4 phases: orientation, identification, exploitation, and resolution. The theory focuses on communication and rapport building to understand the client's needs and promote their health, independence, and personal growth. Peplau viewed nursing as a therapeutic process centered around 4 concepts: the client as a unique person, the environment's influence on health, health as optimal well-being, and the nurse's role in facilitating care through interpersonal relationships.