| By estimating a person's location on an underlying latent continuum, traditional assessments have been effective for selecting examinees who are most likely to succeed in a particular domain. In addition, test theories used for interpreting scores from traditional assessments are designed to optimize the estimate of a examinees'single score on an underlying latent scale– the true score scale in classical test theory (CTT) or the latent trait scale in item response theory (IRT). A single aggregate score produced using CTT and IRT provides general information about examinees'location on a continuum. However, it fails to provide specific information about examinees'cognitive strengths and weaknesses . The AHM is a cognitive diagnostic model which combines with the cognitive psychology and psychometrics designed to estimate examinees'level of competency as well as profiles that reflect their mastery for a set of attributes. The AHM is based on the assumption that test items can be described by a set of hierarchically-ordered attributes. The paper identified 7 attributes according to Johnson-Laird's mental model theory and their attribute hierarchy, created a Syllogistic reasoning test.and then classified 191 examinees'syllogistic reasoning test items responses into 16 kinds of attribute–mastery patterns. the result demonstrated that, AHM could provide a supplementary method for analyzing test's cognitive construction. with the AHM,more and fine-grain cognitive diagnostic information could be produced.
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