Validity and Reliability

1. Content Validity: Inspects tests questions to see whether they correspond to what the user decides should be covered by the test.

2. Criterion Validity: Scores from a test are correlated with an external criterion. There are two types concurrent and predictive.

3. Construct Validity: The relationship to other information corresponds well with some theory.

4. Test Retest Reliability: The test is given twice and the correlation between the first set of scores and the second set of scores is determined.

5. Alternate Forms or Equivalance Reliability: two equivalent forms of a test, these forms can be used to obtain an estimate of the reliability of the scores from the test.

6. Internal Consistency Estimates of Reliability: Items are correlated with each other and the test ought to be internally consistent.