computerized adaptive and multistage testing with r

education-and-formation

• In adaptive testing, examinees are presented with individualized tests, essentially creating many 'forms' of the test, each composed of varying sets of items drawn from the larger collection.

  VLA-8686F174-RC-044

• A poor test item could have an inordinately large effect on some scores, and not others. Because fewer items are used, a poor item can have a greater effect.

  VLA-8686F174-RC-046

• Some tests have heterogeneous content or use two or more different item types; such tests will often not be strictly unidimensional.

  VLA-8686F174-RC-108

mind-and-cognition

• With the ML estimator, very small ability levels are underestimated and very large ability levels are overestimated; with Bayesian estimators these trends are reversed due to shrinkage.

  VLA-F67C58ED-RC-124

• Neither the sizes of the modules at each stage, nor the composition of these modules significantly affect the ability estimation process.

  VLA-F2870AB5-RC-057

ambition-and-status

• Presenting the same number of items to each examinee has the advantage of being easy to implement; examinees would be measured with varying degrees of precision.

  VLA-8686F174-RC-101