Σύγκριση μεθόδων

	Ονομαστική Νομολογική Εγκυρότητα	Διακριτική Εγκυρότητα Διατεταγμένων Δεδομένων
Πεδίο	Ψυχομετρία	Ψυχομετρία
Οικογένεια	Latent structure	Latent structure
Έτος προέλευσης	1955 (concept); ordinal application 1990s–present	1959 (concept); 2000s–2010s (ordinal adaptations)
Δημιουργός	Cronbach & Meehl (nomological network concept); ordinal extension in modern psychometrics	Campbell & Fiske (discriminant validity concept); adapted for ordinal data by subsequent psychometricians
Τύπος	Validity assessment	Validity assessment
Θεμελιώδης πηγή	Cronbach, L. J., & Meehl, P. E. (1955). Construct validity in psychological tests. Psychological Bulletin, 52(4), 281–302.	Campbell, D. T., & Fiske, D. W. (1959). Convergent and discriminant validation by the multitrait-multimethod matrix. Psychological Bulletin, 56(2), 81–105.
Εναλλακτικές ονομασίες	nomological validity for ordinal data, ordinal nomological network, construct network validity (ordinal), ordinal criterion-related validity	discriminant validity for ordinal data, polychoric discriminant validity, ordinal HTMT, ordinal AVE-based discriminant validity
Συναφείς	5	6
Σύνοψη	Ordinal nomological validity examines whether a construct measured with ordinal items (e.g., Likert-type scales) behaves in theoretically predicted ways within a nomological network — a web of expected relationships with other constructs and criteria — using methods suited to ordinal data rather than assuming continuous measurement.	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.