How is a theory defined in nursing?

In nursing, a theory is defined as a systematic articulation of statements related to the discipline. This means that a nursing theory consists of well-organized concepts and principles that guide the practice of nursing. Theories are essential because they provide a framework for understanding and addressing nursing phenomena, guiding research, practice, and education within the field.

The systematic nature of a theory distinguishes it from mere opinions or collections of random ideas. It is structured and derived from a coherent set of concepts that can be tested and applied in various clinical scenarios. This structured approach helps in developing nursing knowledge and informs evidence-based practice, enhancing patient care outcomes.

While other options provided could be seen as elements of knowledge in the field, they lack the structured and theoretical basis that is crucial for the kind of comprehensive understanding needed in nursing. A theory goes beyond individual perspectives or historical descriptions, establishing a foundation for nursing as a science and an art, and contributing to the advancement of the profession.