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Notes to Factor Analysis Techniques for Construct Validity
Mousa Alavi1, Erik Biros2, Michelle Cleary3
1Department of Mental Health Nursing, School of Nursing and Midwifery, Isfahan University of Medical Sciences, Isfahan, Iran.
Summary
This paper discusses factor analysis for construct validity in psychological testing. It provides guidance on reporting findings from exploratory and confirmatory factor analysis to ensure measurement reliability.
Area of Science:
- Psychological Measurement
- Health Sciences Research
Background:
- Construct validity is essential for psychological testing and measurement instruments.
- Reliable and valid measurements are crucial in nursing and health sciences research.
- Factor analysis techniques are commonly used to assess the structure of test variables.
Purpose of the Study:
- To introduce and discuss factor analysis techniques for establishing construct validity.
- To provide suggestions for reporting evidence from factor analysis to support construct validity.
- To emphasize that construct validity is an ongoing process supported by multiple evidence sources.
Main Methods:
- Exploratory Factor Analysis (EFA)
- Confirmatory Factor Analysis (CFA)
Main Results:
- Both EFA and CFA provide essential evidence for construct validity.
- Clear reporting of factor analysis is necessary to support construct validity claims.
- Researchers should integrate findings from factor analysis with other validity evidence.
Conclusions:
- Factor analysis is a key tool for assessing construct validity in measurement.
- Reporting standards for factor analysis in validity studies need clear guidelines.
- Establishing construct validity is a continuous research endeavor, not a one-time event.
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