Validity and Reliability

1. Various Types of Validity

1.1. Content Validity

1.2. Criterion-Related Validity

1.2.1. Concurrent

1.2.2. Predictive

1.3. Construct Validity

2. Importance of Validity to Learning and Assessment

2.1. To ensure that a test measures what it is supposed to measure.

3. Various Types of Reliability

3.1. Test - Retest (Stability)

3.2. Alternative Form (Equivalence)

3.2.1. Split-half Methods

3.2.2. Kuder-Richardson Methods

3.3. Internal Consistency

4. Importance or Reliability to Learning and Assessment

4.1. To ensure that the test yields the same or similar score rankings consistently.