Test reliability and validity defined3/24/2023 ![]() ![]() So, what is the difference between the two? ![]() In simple words, psychometric properties refer to the reliability and validity of the instrument. The psychometric properties of a test are broadly defined into two: Researchers must ensure that their tests adhere to good research practices through pilot-testing and iterative processes that incorporate the essential psychometric properties. Standardized tests have undergone checks on these properties while for researcher-made questionnaires, these properties need to be satisfied at the very least. Psychometric property is the aptness of a test or research instrument that seeks to measure human characteristics to understand complex human behavior.ĭoes the research instrument measure what it intends to measure? Or is it producing spurious data that will cause researchers to make wrong conclusions?
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