|Title||A practitioner's guide to variable-length computerized classification testing|
|Year of Publication||2007|
|Secondary Title||Practical Assessment, Research and Evaluation|
|Keywords||CAT, classification, computer adaptive testing, computerized adaptive testing, Computerized classification testing|
Variable-length computerized classification tests, CCTs, (Lin & Spray, 2000; Thompson, 2006) are a powerful and efficient approach to testing for the purpose of classifying examinees into groups. CCTs are designed by the specification of at least five technical components: psychometric model, calibrated item bank, starting point, item selection algorithm, and termination criterion. Several options exist for each of these CCT components, creating a myriad of possible designs. Confusion among designs is exacerbated by the lack of a standardized nomenclature. This article outlines the components of a CCT, common options for each component, and the interaction of options for different components, so that practitioners may more efficiently design CCTs. It also offers a suggestion of nomenclature.