Comparar métodos

	Análisis de ítems de forma abreviada	Teoría de Respuesta al Ítem (TRI)
Campo	Psicometría	Psicometría
Familia	Latent structure	Latent structure
Año de origen	1990s–2000s	1952–1968
Autor original	Psychometric tradition; methodological articulation by Smith, McCarthy & Anderson (2000)	Frederic M. Lord (and Allan Birnbaum for the 2PL/3PL models)
Tipo	Item selection and evaluation procedure	Probabilistic measurement model
Fuente seminal	Smith, G. T., McCarthy, D. M., & Anderson, K. G. (2000). On the sins of short-form development. Psychological Assessment, 12(1), 102–111.	Lord, F. M. & Novick, M. R. (1968). Statistical Theories of Mental Test Scores. Addison-Wesley.
Alias	abbreviated scale item analysis, short-scale item evaluation, item screening for short forms, SFIA	IRT, latent trait theory, item characteristic curve theory, modern test theory
Relacionados	4	5
Resumen	Short-form item analysis is the systematic psychometric evaluation and selection of items when constructing an abbreviated version of a longer measurement instrument. It applies classical and modern item-analysis criteria — item-total correlations, reliability estimates, and factor structure — to identify the smallest item subset that preserves the original scale's psychometric integrity.	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.