item response theory

[/ˈaɪtəm rɪˈspɑːns ˈθɪəri/]
noun
teoria de resposta ao item
1. A psychometric theory that models the relationship between individuals' abilities and their performance on test items, focusing on how the probability of a correct response depends on both item characteristics and the respondent's latent ability
Item response theory allows educators to create more accurate assessments by analyzing how test-takers with different ability levels respond to individual questions.
A teoria de resposta ao item permite que educadores criem avaliações mais precisas analisando como respondentes com diferentes níveis de habilidade respondem a questões individuais.
2. A methodological framework in educational and psychological testing that uses mathematical models to estimate latent traits and item parameters
Using item response theory, the researcher determined which test items discriminated best between high and low performers.
Usando a teoria de resposta ao item, o pesquisador determinou quais itens do teste discriminaram melhor entre altos e baixos desempenhos.
Item response theory is fundamental in contemporary educational assessment in both Brazil and the USA, particularly in large-scale standardized testing programs. In Brazil, TRI (teoria de resposta ao item) is officially used in major national examinations like the ENEM (Exame Nacional do Ensino Médio). This represents a shift from classical test theory toward more sophisticated psychometric modeling, reflecting international standards in educational evaluation.
Synonyms / Sinônimos
latent trait theoryIRTmodern test theoryability-based testing framework
Antonyms / Antônimos
classical test theorytrue score theory

Regional Variations

General Brazilian Portuguese
teoria de resposta ao item (TRI)
Standard academic and professional usage in educational and psychological contexts
Portugal
teoria de resposta ao item
Used in academic and assessment contexts, though less common than in Brazil
USA/International English
item response theory (IRT)
Widely used in educational testing, psychometrics, and standardized assessment

Related Words

Rasch modellatent abilityitem characteristic curveitem difficulty parameteritem discriminationitem guessing parameterpsychometricseducational assessment

Related Idioms & Phrases

item characteristic curve analysis
ability-item interaction
parameter estimation
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