Journal
EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT
Volume 70, Issue 4, Pages 557-577Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0013164409355695
Keywords
exploratory factor analysis; estimation error; factor loading standard errors; power; Type I error; rotation
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Exploratory factor analysis (EFA) is commonly employed to evaluate the factor structure of measures with dichotomously scored items. Generally, only the estimated factor loadings are provided with no reference to significance tests, confidence intervals, and/or estimated factor loading standard errors. This simulation study assessed factor loading estimation error under several experimental conditions and whether hypothesis testing and/or confidence intervals should be employed. Results revealed that the promax rotation performed well with small interfactor correlations and simple structure data, whereas varimax only performed well with orthogonal factors. Neither rotation method performed well with larger interfactor correlations or approximate simple structure data. An explanation of these results is provided.
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