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- Item_response_theory abstract "In psychometrics, item response theory (IRT) also known as latent trait theory, strong true score theory, or modern mental test theory, is a paradigm for the design, analysis, and scoring of tests, questionnaires, and similar instruments measuring abilities, attitudes, or other variables. Unlike simpler alternatives for creating scales evaluating questionnaire responses it does not assume that each item is equally difficult. This distinguishes IRT from, for instance, the assumption in Likert scaling that "All items are assumed to be replications of each other or in other words items are considered to be parallel instruments" (p. 197). By contrast, item response theory treats the difficulty of each item (the ICCs) as information to be incorporated in scaling items.It is based on the application of related mathematical models to testing data. Because it is generally regarded as superior to classical test theory, it is the preferred method for developing scales, especially when optimal decisions are demanded, as in so-called high-stakes tests e.g. the Graduate Record Examination (GRE) and Graduate Management Admission Test (GMAT).The name item response theory is due to the focus of the theory on the item, as opposed to the test-level focus of classical test theory. Thus IRT models the response of each examinee of a given ability to each item in the test. The term item is generic: covering all kinds of informative item. They might be multiple choice questions that have incorrect and correct responses, but are also commonly statements on questionnaires that allow respondents to indicate level of agreement (a rating or Likert scale), or patient symptoms scored as present/absent, or diagnostic information in complex systems.IRT is based on the idea that the probability of a correct/keyed response to an item is a mathematical function of person and item parameters. The person parameter is construed as (usually) a single latent trait or dimension. Examples include general intelligence or the strength of an attitude. Parameters on which items are characterized include their difficulty (known as "location" for their location on the difficulty range), discrimination (slope or correlation) representing how steeply the rate of success of individuals varies with their ability, and a pseudoguessing parameter, characterising the (lower) asymptote at which even the least able persons will score due to guessing (for instance, 25% for pure chance on a 4-item multiple choice item).".
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- Item_response_theory wikiPageExternalLink Psychometrics.html.
- Item_response_theory wikiPageExternalLink irt.
- Item_response_theory wikiPageExternalLink baker.
- Item_response_theory wikiPageExternalLink flexMIRT.VPGCentral.com.
- Item_response_theory wikiPageExternalLink irt-tutorial.
- Item_response_theory wikiPageExternalLink tutorial.asp.
- Item_response_theory wikiPageExternalLink standards.html.
- Item_response_theory wikiPageExternalLink icl.
- Item_response_theory wikiPageExternalLink IRT.pdf.
- Item_response_theory wikiPageExternalLink lta.htm.
- Item_response_theory wikiPageExternalLink papers.htm.
- Item_response_theory wikiPageExternalLink www.rasch-analysis.com.
- Item_response_theory wikiPageExternalLink index.html.
- Item_response_theory wikiPageExternalLink history.html.
- Item_response_theory wikiPageExternalLink main_software.html.
- Item_response_theory wikiPageExternalLink www.winsteps.com.
- Item_response_theory wikiPageID "420159".
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- Item_response_theory hasPhotoCollection Item_response_theory.
- Item_response_theory subject Category:Comparison_of_assessments.
- Item_response_theory subject Category:Educational_assessment_and_evaluation.
- Item_response_theory subject Category:Latent_variable_models.
- Item_response_theory subject Category:Psychometrics.
- Item_response_theory subject Category:Statistical_models.
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- Item_response_theory comment "In psychometrics, item response theory (IRT) also known as latent trait theory, strong true score theory, or modern mental test theory, is a paradigm for the design, analysis, and scoring of tests, questionnaires, and similar instruments measuring abilities, attitudes, or other variables. Unlike simpler alternatives for creating scales evaluating questionnaire responses it does not assume that each item is equally difficult.".
- Item_response_theory label "Item response theory".
- Item_response_theory label "Probabilistische Testtheorie".
- Item_response_theory label "Teoria da resposta ao item".
- Item_response_theory label "Teoría de respuesta al ítem".
- Item_response_theory label "項目応答理論".
- Item_response_theory label "项目反应理论".
- Item_response_theory sameAs Teorie_odpovědi_na_položku.
- Item_response_theory sameAs Probabilistische_Testtheorie.
- Item_response_theory sameAs Teoría_de_respuesta_al_ítem.
- Item_response_theory sameAs 項目応答理論.
- Item_response_theory sameAs 문항_반응_이론.
- Item_response_theory sameAs Teoria_da_resposta_ao_item.
- Item_response_theory sameAs m.026bgl.
- Item_response_theory sameAs Q1207340.
- Item_response_theory sameAs Q1207340.
- Item_response_theory sameAs Item_response_theory.
- Item_response_theory wasDerivedFrom Item_response_theory?oldid=603609854.
- Item_response_theory isPrimaryTopicOf Item_response_theory.