Validity & Reliability

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Validity & Reliability by Mind Map: Validity & Reliability

1. Construct Validity

1.1. Test measures based on a theory or rationale

2. Test-Retest

2.1. 1 Test = Given Twice

2.1.1. Issue 1: Memory

2.1.1.1. Too little time in between

2.1.2. Issue 2: Change in Trait/Skill being measured

2.1.2.1. Too much time in between

3. Alternate Forms

3.1. 2 equivalent tests

3.1.1. Requires development of two tests

4. Internal Consistency

4.1. 1 test split into 2

4.1.1. odd-even reliability

4.1.2. Spearman-Brown prophecy

4.1.3. Kuder-Richardson

4.1.3.1. KR20

4.1.3.2. KR21

4.1.3.3. Coefficient Alpha

5. Criterion Related Validity

5.1. Concurrent

5.1.1. New "better" test = high correlation with existing test

5.2. Predictive

5.2.1. New test predicts some future expected outcome

6. Content Validity

6.1. Test measures instructional objectives