Σύγκριση μεθόδων

	Διακριτική Εγκυρότητα Διατεταγμένων Δεδομένων	Ανάλυση Ορθολογικής Αξιοπιστίας
Πεδίο	Ψυχομετρία	Ψυχομετρία
Οικογένεια	Latent structure	Latent structure
Έτος προέλευσης	1959 (concept); 2000s–2010s (ordinal adaptations)	2007
Δημιουργός	Campbell & Fiske (discriminant validity concept); adapted for ordinal data by subsequent psychometricians	Bruno D. Zumbo and colleagues
Τύπος	Validity assessment	Internal consistency reliability estimation
Θεμελιώδης πηγή	Campbell, D. T., & Fiske, D. W. (1959). Convergent and discriminant validation by the multitrait-multimethod matrix. Psychological Bulletin, 56(2), 81–105.	Zumbo, B. D., Gadermann, A. M. & Zeisser, C. (2007). Ordinal versions of coefficients alpha and theta as measures of internal consistency for Likert rating scales. Journal of Modern Applied Statistical Methods, 6(1), 21–29.
Εναλλακτικές ονομασίες	discriminant validity for ordinal data, polychoric discriminant validity, ordinal HTMT, ordinal AVE-based discriminant validity	ordinal alpha, polychoric reliability, reliability for ordinal scales, ORA
Συναφείς	6	5
Σύνοψη	Ordinal discriminant validity assesses whether a latent construct measured by ordinal (Likert-type) items is empirically distinct from other constructs in the same instrument. It applies polychoric correlations and ordinal-appropriate factor loadings to standard discriminant validity criteria such as the Fornell-Larcker rule and the Heterotrait-Monotrait ratio (HTMT), ensuring that validity conclusions are not distorted by the non-continuous nature of ordered-response data.	Ordinal reliability analysis estimates the internal consistency of scales whose items are measured on ordered-category (Likert-type) response formats. By basing computations on polychoric correlations rather than Pearson correlations, it corrects for the attenuation that standard Cronbach's alpha produces when responses are discrete and non-normal.