Estimating Teachers' Decision Making in Doing Proofs Using a Diagnostic Classification Model

• In Event: 45.095 - Sheraton Roundtable Seven - Osgoode Ballroom
  In Roundtable Session: 45.095-1 - Mathematics Teachers Instructional Decision Making

Abstract

We investigate teachers’ dispositions to comply with a normative action when making a decision. Scenario-based instruments consisting of two sets of items, which reflect two hypothesized norms in doing geometric proofs, were used to operationalize teachers’ disposition to comply with norms. By applying a diagnostic classification model (DCM) to classify teachers with respect to their disposition profiles, this study shows an association between teachers’ dispositions and the norm (at stake). This study also illustrates methodological benefits of a DCM model in estimating a binary construct (i.e., teachers’ disposition), which has more than one sub-construct, with a small number of items.

Authors

• Inah Ko, University of Michigan - Ann Arbor

• Patricio G. Herbst, University of Michigan - Ann Arbor