Discuss: Validity and Reliability of an Instrument

This is the discussion thread for the lesson "Validity and Reliability of an Instrument" (Research Methodology, Unit 3). Ask questions, share real-world examples, and help classmates who are stuck. Conversation starters. Try explaining one of these in your own words: - Distinguish face, content, construct, and criterion validity - Distinguish test-retest reliability, internal consistency, and inter-rater reliability - Explain why an instrument can be reliable without being valid, or valid without being reliable