Validity and Reliablity of Assessment Tests

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Validity and Reliablity of Assessment Tests by Mind Map: Validity and Reliablity of Assessment Tests

1. Types of Validity Evidence

1.1. Construct Validity Evidence

1.2. Criterion-Related Validity Evidence

1.2.1. Concurrent Criterion-Related Validity Evidence

1.2.2. Predictive Criterion-Related Validity Evidence

1.3. Content Validity Evidence

2. Evidence of Validity

3. Interpreting Validity Evidence

4. Reliability

5. Methods of Estimating Reliability

5.1. Test-retest Estimates

5.1.1. This method requires administration of the same test twice over a pre-determined time interval to the same group of test-takers.

5.2. Alternate-form Estimates

5.2.1. This method requires administration of two equivalent versions of a test to the same group of test-takers over a short time-interval and correlating the scores.

5.3. Internal Consistency Estimates

5.3.1. These estimates of reliability fall into two general categories:

5.3.1.1. Split-half and Odd-even Estimates

5.3.1.1.1. These estimates involve dividing a test into halves and correlating them with one another.

5.3.1.2. Kuder-Richardson Method

5.3.1.2.1. Kuder-Richardson methods are used to determine how much the entire test can consistently mearsure a concept.

6. Interpreting Reliability Coefficients

6.1. Group Variability

6.2. Scoring Reliability

6.3. Test Length

6.4. Item Difficulty