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What is Reliability and Validity in Psychometry about?
Reliability and validity are essential qualities that must be present in measurement instruments. Reliability refers to the consistency of the measurements, while validity is the usefulness of the instrument to measure what it intends to measure. There are several methods to evaluate reliability and validity, such as test-retest, parallel forms, and analysis of structure and response processes. Factors such as improvisation, poor translation, and application conditions can influence.
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