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classical test theory  

Definition

  • The first theory of measurement has been named classical test theory (CTT) because it was formulated from simple assumptions made by test theorists at the start of testing. It is also called the theory of true and error scores, because it is thought to comprise both true scores and error, and classical reliability theory, since its major function is to evaluate the reliability of the observed scores on a test; that is, it calculates the strength of the relationship between the observed score and the true score. [Source: Encyclopedia of Measurement and Statistics; Classical Test Theory]

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https://concepts.sagepub.com/social-science/concept/classical_test_theory

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