Classical Test Theory
Classical Test Theory (CTT) is a framework used to understand and evaluate the reliability and validity of tests and measurements. It posits that an individual's observed score on a test is made up of two parts: the true score (the actual level of ability or trait) and measurement error (random fluctuations that can affect the score). CTT helps researchers assess how consistently a test measures what it intends to, guiding improvements in test design, interpretation, and comparisons. Essentially, it aims to ensure that the results accurately reflect the true abilities or characteristics being measured.
Additional Insights
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Classical Test Theory (CTT) is a framework used to evaluate and understand how well tests measure what they intend to. In the context of General Knowledge, CTT assumes that a person's true ability in this area can be estimated from their test scores. Each score has two components: the true score, which reflects the individual's actual knowledge, and error, which can stem from factors like misunderstandings or test conditions. CTT helps in assessing the reliability and validity of tests, ensuring they fairly represent a person's general knowledge level.