CATSim

Author: Assessment Systems Corp.
Contact: http://www.assess.com/catsim/
Description: CATSim implements three types of simulations for computerized adaptive testing (CAT): post-hoc (real-data) simulations, hybrid simulations, and monte-carlo simulations. In implementing a CAT program, all three types of simulation can be used at various stages of the CAT development process. CATSim options allow you to implement all three types of simulations, varying CAT starting thetas, theta estimation methods, item selection methods, item exposure controls, and termination criteria. CATSim will implement simulations for item banks of up to 999 items, with no limit on the number of examinees for both post-hoc and hybrid simulations, and a limit of 10,000 examinees for monte-carlo simulations. However, CAT simulations can be done with as few as 200 examinees or fewer if they adequately represent the population to which the CAT will be applied. CATSim implements simulations for all three dichotomous item response theory (IRT) models and five polytomous IRT models. CATSim includes all of the CAT options in FastTest, our secure platform for online testing, so that the results of using CATSim can easily be implemented in your testing program.
Analyses: Item & Test Analysis; Scaling; Scoring
System Requirements:
Measurement Model: IRT/Rasch
License Type: Commercial
Documentation: