Content Validity and Reliability

1. Validity: Does the test measure what it is supposed to measure? (Kubiszy & Borch, 2010 p. 329)

1.1. Criterion Validity

1.1.1. Concurrent Criterion Related Validity: Is there a correlation with widely accepted tests?

1.1.2. Predictive Criterion Related Validity: Can the test predict future scores?

1.2. Content Validity

1.2.1. Measures what it says it measures

1.2.2. Does it match the instructional objective?

2. Reliability: Does the test yield the same or similar scores consistently? (Kubiszy & Borch, 2010 p.329)

2.1. Internal consistency

2.1.1. Do students consistently get the same answer on similar questions?

2.1.2. Two Halves Method: Split the test into equal halves and analyze the outcomes

2.2. Test-Retest or Stability

2.2.1. Is there correlation between multiple test groups?

2.3. Alternate Forms or Equivalance

2.3.1. Do the scores of two equal tests administered to different groups correlate?