Item Response Theory (from: 9th edition of Psychological testing and assessment) - Cohen - Article
1. Item Response Theory (Cohen)
Item Response Theory (IRT), also known as latent-trait theory, is a family of theories and methods that provides a way to model the probability that a person with X ability (e.g., a particular personality trait) is able to perform (e.g., on a personality test) at a level of Y.
IRT is not a single
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