Published Online: 30 JAN 2010
Copyright © 2010 John Wiley & Sons, Inc. All rights reserved.
Corsini Encyclopedia of Psychology
How to Cite
Hogan, T. P. 2010. Item Analysis. Corsini Encyclopedia of Psychology. 1–2.
- Published Online: 30 JAN 2010
Item analysis refers to a family of techniques for examining characteristics of test items. Most psychological tests consist of a collection of individual items. Test developers use item analysis techniques to evaluate these test items, eliminate poorly performing items, include nicely performing items, and apprise test users of test features resulting from the selection of items. In formal test development projects, item analysis precedes preparation of the final test. In less formal applications, item analysis may occur only after administration of the final test to indicate quality of the test.
- item difficulty;
- item discrimination;
- differential item functioning;
- item response theory;
- classical test theory