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	Trafność dyskryminacyjna dla danych porządkowych	Eksploracyjna analiza czynnikowa dla danych porządkowych
Dziedzina	Psychometria	Psychometria
Rodzina	Latent structure	Latent structure
Rok powstania	1959 (concept); 2000s–2010s (ordinal adaptations)	1978–1984
Twórca	Campbell & Fiske (discriminant validity concept); adapted for ordinal data by subsequent psychometricians	Bengt Muthén
Typ	Validity assessment	Latent variable / dimension reduction
Źródło pierwotne	Campbell, D. T., & Fiske, D. W. (1959). Convergent and discriminant validation by the multitrait-multimethod matrix. Psychological Bulletin, 56(2), 81–105.	Flora, D. B. & Curran, P. J. (2004). An empirical evaluation of alternative methods of estimation for confirmatory factor analysis with ordinal data. Psychological Methods, 9(4), 466–491.
Inne nazwy	discriminant validity for ordinal data, polychoric discriminant validity, ordinal HTMT, ordinal AVE-based discriminant validity	ordinal factor analysis, polychoric EFA, categorical EFA, EFA for ordinal data
Pokrewne	6	5
Podsumowanie	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 exploratory factor analysis discovers latent factors underlying a set of ordinal items — typically Likert scales — by computing polychoric correlations among the items and then applying a weighted least squares estimator. It avoids the distortions that arise when continuous EFA methods are naively applied to ordered categorical responses.