Sammenlign metoder

	Ordinal Rasch Model (Rating Scale Model og Partial Credit Model)	Test af målingsinvarians
Fagområde	Psykometri	Psykometri
Familie	Latent structure	Latent structure
Oprindelsesår	1978–1982	2000
Ophavsperson	David Andrich (RSM, 1978); Geoff Masters (PCM, 1982)	Vandenberg & Lance
Type	Item response model for ordered categories	Multi-group confirmatory factor analysis procedure
Oprindelig kilde	Andrich, D. (1978). A rating formulation for ordered response categories. Psychometrika, 43(4), 561–573.	Vandenberg, R. J., & Lance, C. E. (2000). A review and synthesis of the measurement invariance literature. Organizational Research Methods, 3(1), 4–70.
Aliasser	Rating Scale Model, Partial Credit Model, RSM, PCM	Factorial Invariance, Measurement Equivalence, Configural-Metric-Scalar Testing, Ölçüm Değişmezliği
Relaterede	6	3
Resumé	The ordinal Rasch model extends the dichotomous Rasch framework to items with ordered response categories such as Likert-type scales. It places both persons and items on a shared interval-level metric, enabling principled measurement from ordinal data while checking whether items function consistently across all response thresholds.	Measurement invariance testing is a sequence of nested confirmatory factor analysis (CFA) models that examines whether a psychological scale measures the same latent construct in the same way across distinct groups or time points. Systematized and popularized by Vandenberg and Lance (2000), the procedure tests a hierarchy of constraints — from identical factor patterns to identical item intercepts — so that researchers can justify meaningful group comparisons on latent means.