Validity & Reliability

1. Does the test measure what it is supposed to?

2. Why are validity and reliabity important to learning and assessment?

3. Content validity

4. Construct validity

5. Types of validity evidence

6. Criterion related validity

6.1. Concurrent criterion validity

6.1.1. Predictive validity

7. An issue with internal consistency is that the test must be on one concept in order to be accurate. It is not possible to measure reliability across different topics on the same test. It is good to use a second method of testing reliabilty as well.

8. Alternate Forms or Equivalence

9. Test-Retest or Stability

10. Methods of measuring reliability

11. Do the test results provide similar and consistent data?

12. Internal Consistency

12.1. Split-Half Methods

12.1.1. Odd-Even