Item Response Theory

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August 31, 2024 4 min read Definitions
Discrimination Parameter (a_i): Differentiating Abilities
Mathematics Statistics Item Response Theory Educational Assessment Psychometrics Statistical Models Measurement
The Discrimination Parameter (a_i) in Item Response Theory (IRT) measures how well an item distinguishes between individuals with different levels of ability.
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August 31, 2024 5 min read Definitions
Item Response Theory: A Comprehensive Framework for Modeling Latent Traits
Mathematics Statistics Item Response Theory IRT Latent Traits Psychometrics Educational Measurement
An in-depth exploration of Item Response Theory (IRT), its historical context, categories, key events, models, diagrams, importance, applications, and related terms.
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August 31, 2024 4 min read Definitions
Latent Trait: Understanding Unobserved Characteristics
Statistics Psychology Latent Trait Item Response Theory Measurement Psychometrics Education
Latent traits are unobserved characteristics or abilities measured using Item Response Theory (IRT) models, crucial in psychological and educational assessments.
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