Beta testing provides controlled exposure of items in a new test bank to individuals of differing ability levels. The beta candidates are administered all items in a new test bank. After a sufficient number of beta test candidates complete the test, psychometricians analyze the beta test data. This is known as beta analysis. The range of candidate ability levels provides a basis for decisions to be made using the beta analysis results.
How is Beta Testing performed?
All items in the new test bank are administered to a group of beta candidates. This test administration is almost always done in a secure testing environment. The test owner (organization) chooses both the group of beta candidates and the beta test administration environment.
What outcomes should you expect from Beta Testing?
- An item bank with appropriately exposed test items that include beta test statistics
- A basis for selecting items for potential use on test forms
- An item bank ready to be organized into test forms