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Today’s lecture delves into Validity in psychological testing. Validity refers to the accuracy with which a test measures what it is intended to measure. Unlike reliability, which focuses on consistency, validity involves correlating test scores with a criterion considered the best measure of the target attribute. Validity is a matter of degree and an ongoing process, ensuring that tests remain relevant and accurate over time. Key types of validity include content validity, face validity, criterion-related validity, and construct validity. Understanding and ensuring the validity of psychological tests is crucial for their credibility and effectiveness.

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