Types of Validity and Reliability

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Types of Validity and Reliability by Mind Map: Types of Validity and Reliability

1. Reliability

2. Test-retest reliability is a measure of reliability obtained by administering the same test twice over a period of time to a group of individuals. The scores from Time 1 and Time 2 can then be correlated in order to evaluate the test for stability over time.

3. Parallel forms reliability is a measure of reliability obtained by administering different versions of an assessment tool (both versions must contain items that probe the same construct, skill, knowledge base, etc.) to the same group of individuals. The scores from the two versions can then be correlated in order to evaluate the consistency of results across alternate version

4. Inter-rater reliability is a measure of reliability used to assess the degree to which different judges or raters agree in their assessment decisions. Inter-rater reliability is useful because human observers will not necessarily interpret answers the same way; raters may disagree as to how well certain responses or material demonstrate knowledge of the construct or skill being assessed

5. Internal consistency reliability is a measure of reliability used to evaluate the degree to which different test items that probe the same construct produce similar results. Subtypes: Average inter-item correlation or Split-half reliability

6. Validity

7. Face Validity ascertains that the measure appears to be assessing the intended construct under study.

8. Construct Validity is used to ensure that the measure is actually measure what it is intended to measure (i.e. the construct), and not other variables.

9. Criterion-Related Validity is used to predict future or current performance - it correlates test results with another criterion of interest

10. Formative Validity when applied to outcomes assessment it is used to assess how well a measure is able to provide information to help improve the program under study.

11. Sampling Validity (similar to content validity) ensures that the measure covers the broad range of areas within the concept under study.