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Measurement of uncertainty tolerance revisited
Paula Cristina Eiras Poço1,2, Carlos Fernando Collares3, Ahmed Haydar4
1Faculdade São Leopoldo Mandic, Campinas, Brazil.
The Clinical Teacher
|August 23, 2023
Summary
This study validated the TAMSAD scale for measuring uncertainty tolerance (UT) in medical students. The revised 17-item scale effectively captures ambiguity, complexity, and probability as key dimensions of UT.
Area of Science:
- Medical Education
- Psychometrics
Background:
- Uncertainty tolerance (UT) is crucial in medical education due to professional challenges.
- Existing UT measurement tools may lack validity due to outdated frameworks.
- This study addresses inconsistencies in UT research by validating a scale against a current framework.
Purpose of the Study:
- To investigate the validity of the TAMSAD scale for measuring uncertainty tolerance.
- To refine the TAMSAD scale using contemporary psychometric methods and an established framework.
- To provide a more accurate instrument for assessing UT in medical trainees.
Main Methods:
- 1052 students were invited, with 694 (65.9%) responding.
- Psychometric analyses included exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and exploratory graph analysis (EGA).
- Cognitive diagnostic modeling (CDM) and reliability analyses (Cronbach's alpha, McDonald's omega) were performed.
Main Results:
- The initial EFA did not yield clear dimensions.
- EGA identified three dimensions: ambiguity, complexity, and probability.
- A revised 17-item TAMSAD scale demonstrated improved fit indices in CFA and CDM analyses.
- The scale's reliability was 0.782.
Conclusions:
- The TAMSAD scale, revised through modern psychometric techniques, is a valid multidimensional measure of uncertainty tolerance.
- The identified dimensions (ambiguity, complexity, probability) provide a structured understanding of UT sources.
- This validated scale offers a more accurate instrument for research and practice in medical education.
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