Nursing theories support evidence-based practice by offering frameworks that guide the integration of research findings into clinical decision-making. These theories help nurses formulate research questions, develop study designs, and interpret findings relevant to nursing practice. By providing a structured approach, theories enable nurses to apply the best available evidence to their patient care practices. For example, a nurse using Peplau’s Interpersonal Relations Theory might research the impact of therapeutic communication on patient outcomes, allowing them to implement strategies that enhance patient engagement. Additionally, nursing theories contribute to the development of guidelines and protocols, ensuring that care is grounded in scientific evidence. This alignment of theory and practice fosters a culture of continuous improvement in healthcare delivery.