Computerized Adaptive Testing With Multiple Form Structures (CT-99-14)
by Ronald D. Armstrong, Faculty of Management, Rutgers University; Douglas H. Jones, Faculty of Management, Rutgers University; Nicole B. Koppel, School of Business, Montclair State University; and Peter J. Pashley, Testing and Research, Law School Admission Council
A multiple form structure (MFS) is an ordered collection or network of testlets (i.e., sets of items). An examinee’s progression through the network of testlets is dictated by the correctness of the examinee’s answers, thereby adapting the test to the examinee’s trait level. The collection of paths through the network yields the set of all possible test forms, allowing test specialists the opportunity to review them before they are administered. Also, limiting the exposure of an individual MFS to a specific period of time can enhance test security. This paper provides an overview of methods that have been developed to generate parallel MFSs. The approach is applied to the assembly of an experimental computerized Law School Admission Test (LSAT).