Validity and Reliability

1. Content Validity Match objects with objectives

1.1. Check out http://www.mindmeister.com/tools

2. Reliability-Stability of a test score over repeated administrations

3. Validity-Test measures what it is supposed to measure

4. Criterion-Related Validity Scores correlated with external criterion (Concurrent & Predictive)

4.1. Concurrrent Validity Correlating new test with well-established test

4.2. Predictive Validity “Correlate scores of the new test with future performance”

5. Contrast Validity - Relates to information corresponding well to some theory

6. Three methods to estimate Reliability

6.1. Test-Retest or Stability-Test is given twice and correlation of first and second scores is determined

6.2. Alternative Form-Correlating the scores of two forms of a test distributed to the same group

6.3. Internal Consistency-Two categories: split-half or odd-even estimates and item-total correlations

6.3.1. "Split-half and odd–even estimates divide a test into halves and correlate the halves with one another." (Kubiszyn & Borich, 2013)