Polytomous Reliability Analysis
Polytomous reliability analysis estimates the internal consistency or precision of measurement for scales composed of items with more than two ordered response categories, such as Likert-type, rating, or partial-credit items. It corrects a well-known underestimation bias in conventional Cronbach's alpha by working with polychoric correlations or IRT-based precision indices.
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Avoti
- Green, S. B. & Yang, Y. (2009). Reliability of summed item scores using structural equation modeling: An alternative to coefficient alpha. Psychometrika, 74(1), 155–167. DOI: 10.1007/s11336-008-9099-3 ↗
- Zumbo, B. D., Gadermann, A. M. & Zeisser, C. (2007). Ordinal versions of coefficients alpha and theta for Likert rating scales. Journal of Modern Applied Statistical Methods, 6(1), 21–29. DOI: 10.22237/jmasm/1177992180 ↗
Kā citēt šo lapu
ScholarGate. (2026, June 3). Reliability Analysis for Polytomous Items. ScholarGate. https://scholargate.app/lv/psychometrics/polytomous-reliability-analysis
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
- Apstiprinošā faktoru analīze (AFA)Psihometrija↔ compare
- Vienuma atbildes teorija (IRT)Psihometrija↔ compare
- Ordinālā uzticamības analīzePsihometrija↔ compare
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