विधियों की तुलना करें

	अनुदैर्ध्य आइटम प्रतिक्रिया सिद्धांत (LIRT)	आइटम रिस्पांस थ्योरी (IRT)
क्षेत्र	मनोमिति	मनोमिति
परिवार	Latent structure	Latent structure
उद्भव वर्ष	1991	1952–1968
प्रवर्तक	Susan E. Embretson	Frederic M. Lord (and Allan Birnbaum for the 2PL/3PL models)
प्रकार	Latent trait / longitudinal psychometric model	Probabilistic measurement model
मौलिक स्रोत	Embretson, S. E. (1991). A multidimensional latent trait model for measuring learning and change. Psychometrika, 56(3), 495–515.	Lord, F. M. & Novick, M. R. (1968). Statistical Theories of Mental Test Scores. Addison-Wesley.
उपनाम	LIRT, longitudinal IRT, repeated-measures IRT, dynamic item response modeling	IRT, latent trait theory, item characteristic curve theory, modern test theory
संबंधित	4	5
सारांश	Longitudinal IRT extends classical item response theory to data collected at multiple time points, allowing researchers to model both the initial latent trait level and its change over time. It is used in educational assessment, clinical trials, and panel studies where the same items or item banks are administered repeatedly to the same individuals.	Item response theory models the probability that a respondent answers an item correctly (or endorses it) as a function of the respondent's latent trait level and the item's own statistical properties — difficulty, discrimination, and guessing. Unlike classical test theory, IRT places persons and items on the same scale, yielding measurement that is sample-independent for items and test-independent for persons.