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Fusion Validity: Theory-Based Scale Assessment via Causal Structural Equation Modeling.
Leslie A Hayduk1, Carole A Estabrooks2, Matthias Hoben2
1Department of Sociology, University of Alberta, Edmonton, AB, Canada.
Frontiers in Psychology
|June 25, 2019
Summary
Fusion validity assessments use structural equation models to confirm if scales align with theory. This method enhances scale validity by embedding it within a broader theoretical framework, aiding in diagnostic investigations.
Area of Science:
- Psychometrics
- Structural Equation Modeling
Background:
- Fusion validity is a method to assess if a scale functions according to theoretical expectations.
- It parallels criterion validity but includes both the scale and its items within the model.
Purpose of the Study:
- To investigate fusion validity assessments using structural equation models.
- To explore how embedding scales within comprehensive theoretical contexts enhances validity.
Main Methods:
- Utilizing structural equation models (SEMs) for fusion validity assessment.
- Embedding scale and item data within a complex theoretical framework.
Main Results:
- Fusion validity requires at least one theorized effect of the scale.
- Scale functioning within a theoretical context is crucial for validity.
- Inappropriate functioning prompts detailed diagnostic investigations.
Conclusions:
- Comprehensive theoretical embedding significantly enhances scale validity.
- Diagnostic investigations can challenge items, procedures, or theory, or suggest improvements.
- Fusion validity is illustrated using the Leadership scale from the Alberta Context Tool in long-term care settings.
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