Reliability vs. Validity

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Reliability vs. Validity by Mind Map: Reliability vs. Validity

1. Content Validity Evidence

1.1. Inspect test questions for topic validity

1.1.1. monitor test questions for comprehensibility

1.1.1.1. keep questions in alignment with state standards

2. Criterion-Related Validity Evidence

2.1. Concurrent Validity Evidence

2.1.1. compares similarities of multiple tests to find correlation with both scores

2.2. Predictive Validity Evidence

2.2.1. helps form important ideas of how well future test-takers will do on future tests

2.2.1.1. yields logical judgement

3. Construct Validity Evidence

3.1. measurable expectations are upheld from test scores

3.1.1. only one set of answers per test

4. Test-Retest or Stability

4.1. Should reveal same or similar results over time

4.1.1. stable, consistent, dependable information over time

4.1.1.1. but use caution for secondary testing; students memory could alter previously expected answers

5. Alternate Forms or Equivalence

5.1. estimate reliability of scores from two equivelent test

5.1.1. must maintain conditions that are as similar as possible to measure similarities with tests

5.1.1.1. typically measures results for alternate purposes

6. Internal Consistency

6.1. split test for measuring a single basic concept

6.1.1. "split halves" - split into two equivalent halves and determining the correlation between them for consistancy

6.2. Kuder-Richardson Methods

6.2.1. depends on the extent to which the entire test represents a single, yet fairly consistent measure of a concpt

6.2.1.1. item-total correlations