Σύγκριση μεθόδων

	Διαχρονική Νομολογική Εγκυρότητα	Δοκιμή Διαχρονικής Αμεταβλητότητας Μέτρησης
Πεδίο	Ψυχομετρία	Ψυχομετρία
Οικογένεια	Latent structure	Latent structure
Έτος προέλευσης	1955 (concept); longitudinal extension 1990s–2000s	1993
Δημιουργός	Cronbach & Meehl (nomological network concept, 1955); longitudinal extension developed in organizational and personality research from the 1990s onward	William Meredith
Τύπος	Validity evaluation	Measurement model testing
Θεμελιώδης πηγή	Cronbach, L. J., & Meehl, P. E. (1955). Construct validity in psychological tests. Psychological Bulletin, 52(4), 281–302.	Meredith, W. (1993). Measurement invariance, factor analysis and factorial invariance. Psychometrika, 58(4), 525–543.
Εναλλακτικές ονομασίες	longitudinal construct validity, nomological network validation across time, longitudinal criterion-related validity, temporal nomological validity	LMI, longitudinal invariance, measurement equivalence across time, temporal measurement invariance
Συναφείς	6	3
Σύνοψη	Longitudinal nomological validity evaluates whether a construct's theoretically predicted relationships with other constructs hold consistently across multiple measurement occasions. It extends the nomological network framework of Cronbach and Meehl (1955) to longitudinal designs, testing whether a scale behaves as theory demands not only at a single time point but over time.	Longitudinal measurement invariance testing determines whether a psychological scale measures the same construct in the same way across two or more time points. It is a prerequisite for interpreting mean-level change scores in panel and repeated-measures studies, ensuring that observed change reflects true change in the construct rather than drift in the measurement instrument.