This study compared an expert-based cognitive model of domain mastery with student-based cognitive models of task performance for Integrated Algebra. Interpretations of student test results are limited by experts' hypotheses of how students interact with the items. In reality, the cognitive processes that students use to solve each item may be…

The research objectives addressed in this dissertation include: the measurement of the effects of an inquiry-based middle school science professional development program on teachers, the development and utilization of a student-level scientific reasoning ability test, and an examination of the connection between the scientific reasoning ability of…