1.1. A test has construct validity evidence if its relationship to other information corresponds well with some theory. A theory is simple a logical explanation or rationale that can account for the interrelationships among a st of variable
2. Concurrent Criterion-Related Validity Evidence
2.1. New node
3. Opportunities
3.1. Predictive validity Evidence
3.2. Interpreting Validity Coefficients
4. Comparing test items with Instructional Objectives
4.1. Content validity Evidence
5. items ought to correlated with each other and the test ought to be internally consistent
6. Internal Consistency
7. Split-half Methods -To find split-half (odd-even ) reliability, each item is assigned to one half or the other.
8. Reliability
8.1. Alternative Forms
8.2. Two equivalent forms of a test, these forms can be used to obtain an estimate of the reliability of the scores from the test.
