This document discusses different types of testing validity and reliability. It defines reliability as the consistency of test measures over time and contexts. It then defines validity as how well a test measures what it intends to, and describes various types of validity including face validity, content validity, construct validity, criterion validity, concurrent validity, predictive validity, and practicality validity.
3. Testing Reliability
Reliability is the degree to which an
assessment tool produces stable and
consistent results
Consistency of measures across different
times test forms and context
4. Testing Validity
Appropriateness and usefulness of the test
Validity refers to the degree in which our test
or other measuring device is truly measuring
what we intended it to measure.
5. Face Validity
Face Validity ascertains that the measure
appears to be assessing the intended
construct under study.
Related to the test overall appearance
6. Content Validity
Content validity is qualitative in nature, and
asks whether a specific element enhances or
detracts from a test or research program.
Related to objectives and their sampling
7. Construct Validity
It implies using the construct correctly
(concepts, ideas, notions)
8. Criterion Validity
Criterion-Related Validity is used to predict
future or current performance - it correlates
test results with another criterion of interest.
9. Concurrent Validity
Concurrent validity is the degree to which the
scores on a test are related to the scores on
another, already established, test administered
at the same time, or to some other valid
criterion available at the same time.
10. Predictive Validity
Capable of anticipating some later measure.
Estimates the relationship of test scores to an
examinees future performance as a master or
non master