Patent ID: 8798518
Filing Date: 2014-08-05
Classification: G09B

Abstract:
1. A computer-implemented method for constructing an assessment, the method comprising: receiving a response for each of a plurality of tasks from one or more examinees for pretesting the tasks; generating observables with a processor for each response using an evidence model, the evidence model including a mapping between responses and observable variables and a plurality of parameters describing the mapping; calibrating one or more student models and each uncalibrated task with the processor based on at least the task model corresponding to the task and the observables obtained from the responses, wherein said calibrating is carried out based on values of the plurality of radicals of the task model; wherein a student model corresponds to each examinee, and wherein each student model comprises one or more discrete variables each relating to one or more of knowledge, skills and abilities of the corresponding examinee and parameters describing a relationship among the one or more variables; and constructing an assessment based upon the calibrated one or more student models and based upon the calibrated tasks.