validity and reliability

1. body of research that demonstrate the relationship between the test and behavior it is intended to measure

2. two types of criterion validity/concurrent and predictive

3. different types of validity: external, internal, test,criterion,content,construct and face validity

4. extent to which a test measures what it claims to measure

5. consistency reproducibility for performance on the test

6. several methods for computing test reliability test and re test reliability, parrallel forms, reliability and decision consistency internal consistency and interated reliability

7. types of reliability: test retest, parallel forms and test reliability

8. one of the most important elements of test quality