A comparison of computerized classification testing and computerized adaptive testing in clinical psychology

The appropriateness of computerized classification testing (CCT) and computerized adaptive testing (CAT) as methods for efficient administration of self-report questionnaires in clinical psychology are compared, when classification is an important test goal. Simulated data sets were used to compare the two methods and to study the effect of latent trait distributions and number of items administered on the quality of clinical measurements and decisions. CAT and CCT outcomes were very similar. The implications of these findings for assessment in clinical psychology are discussed.