reliability and validity

Reliability

The consistency or repeatability of assessment results.

Validity

How accurately a test measures what it is intended to measure.

What is interjudge reliability?

Agreement between two or more judges evaluating the same information.

What is intrajudge reliability?

Agreement by the same judge when evaluating the same information at different times.

What is test-retest reliability?

Consistency of results across separate administrations of the same test.

What is parallel-forms reliability?

Comparing results from two different forms of a test designed to be equivalent.

What is split-half reliability?

Comparing performance on two halves of the same test, such as odd-numbered versus even-numbered items.

What is construct validity?

Whether a test measures the skill or concept it is intended to measure.

What is content validity?

Whether the test items adequately represent the skill being assessed.

What is concurrent validity?

Whether test results agree with an established test measuring similar skills.

What is predictive validity?

Whether a test predicts future performance or performance on another measure.

What is face validity?

Whether a test appears, on the surface, to measure what it claims to measure.