METHOD FOR ESTIMATING EXAMINEE ATTRIBUTE PARAMETERS IN A COGNITIVE DIAGNOSIS MODEL

摘要

A method and system for determining attribute score levels from an assessment are disclosed (Figure 2). An assessment includes items each testing for at least one attribute (Figure 2, 205). A first distribution is generated having a response propensity represented by a highest level of execution for each attribute tested by the item. An item threshold is determined for at least one score for the first distribution. Each item threshold corresponds to a level of execution corresponding to the score for which the item threshold is determined. For each attribute tested by the item, a second distribution is generated having a response propensity represented by a lowest level of execution for the attribute and the highest level of execution for all other attributes tested by the item (Figure 2). A mean parameter is determined for the second distribution. An attribute score level is determined for the scores based on the item thresholds and the mean parameters (Figure 2).