Validity and Reliability Measurements

1. Validity Measurements

1.1. Content Validity Evidence

1.1.1. Criterion-related Evidence

1.1.2. Concurrent

1.1.3. Predictive

1.1.4. Construct Validity Evidence

2. Reliability Measurements

2.1. Test-Retest / Stability

2.1.1. Alternate Forms of Equivalence

2.1.2. Internal Consistency

2.1.2.1. Split-half methods