Perform the indicated operations and simplify. 
Definitions:
Empirically Tested
Involves methodologies that rely on observation and experimentation to validate theories or hypotheses.
Middle-Range Theories
Middle-range theories in nursing are conceptual frameworks that offer explanations for specific phenomena, bridging the gap between grand theories and nursing practice.
Complex Situations
Situations that are comprised of multiple interconnected elements and variables, which are difficult to understand and manage.
Building Blocks
Fundamental components or elements that serve as the foundation for constructing, understanding, or developing something.
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