Instrument Reliability and Validity Guide
This video covers instrument reliability and validity — two critical concepts for evaluating measurement tools in health education research.
What's Covered
- Types of reliability: test-retest, inter-rater, internal consistency (Cronbach's alpha)
- Types of validity: content, criterion (predictive and concurrent), construct
- The relationship between reliability and validity
- How to assess and improve instrument quality
- Key exam formulas and concepts for reliability and validity