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A Substruction Approach to Assessing the Theoretical Validity of Measures
Polly Ryan1, Marianne Weiss2, Paula Papanek3
1University of Wisconsin, Madison, School of Nursing, WI.
Journal of Nursing Measurement
|May 10, 2019
Summary
Substruction visually represents the hierarchy between theory and measures to assess theoretical validity. This method ensures congruence between study concepts and empirical measures, crucial for robust research findings.
Area of Science:
- Nursing Science
- Health Sciences Research Methodology
Background:
- Validity in research encompasses the logic, meaningfulness, and evidence supporting inferences from results.
- Substruction is a heuristic process visually representing the hierarchical structure between theory and measures.
Purpose of the Study:
- To introduce and describe substruction as a method for evaluating the theoretical validity of research measures.
- To demonstrate how substruction can be applied in practice.
Main Methods:
- Utilized Fawcett's Conceptual-Theoretical-Empirical Structure as a framework.
- Presented an exemplar of substruction applied from the Individual and Family Self-Management Theory to the 'Striving to be strong' study's concepts and empirical measures.
Main Results:
- Substruction tables were developed to visually display evidence supporting the theoretical validity of study instruments.
- The process highlights the hierarchical links between theoretical constructs and their measurement.
Conclusions:
- A strong congruence between theory and measurement is essential for establishing the validity of a theory.
- This congruence is critical for supporting attributions regarding moderating, mediating, causal relationships, and intervention effects.
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