Role of The Cognitive Model in Item Development
The cognitive model in the form of an attribute hierarchy has direct implications for item development. Items that measure each attribute must maintain the hierarchical ordering of the attributes as specified by the cognitive model while also measuring increasingly complex cognitive processes. These item types may be in either multiple choice or constructed response format. To date, the AHM has been used with items that are scored dichotomously where 1 corresponds to a correct answer and 0 corresponds to an incorrect answer. Therefore, a student’s test performance can be summarized by a vector of correct and incorrect responses in the form of 1’s and 0’s. This vector then serves as the input for the psychometric analysis where the examinee’s attribute mastery is estimated.
Read more about this topic: Attribute Hierarchy Method
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