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Research Validity and Reliability

This video explains the basic ideas of validity and reliability in research. It helps students understand why data must be accurate and consistent before research findings can be trusted. The video explains validity as whether a test or questionnaire measures what it is supposed to measure, and reliability as whether the results are consistent when the measurement is repeated. Different types of reliability are explained using simple examples. This video is suitable for students studying research methods, especially in information science, education, and social sciences.