Which method tests the validity of self-report instruments by comparing incarcerated youth answers with a "normal" sample to see if there are differences in their answers?

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The known group method tests the validity of self-report instruments by comparing responses from a group with known characteristics (e.g., incarcerated youth) to those from a "normal" sample to identify differences in their answers. This method helps in validating whether the instrument accurately differentiates between groups based on the characteristics being measured.

Which Method Tests the Validity of Self-Report Instruments by Comparing