• Open Access

Evaluating an electricity and magnetism assessment tool: Brief electricity and magnetism assessment

Lin Ding, Ruth Chabay, Bruce Sherwood, and Robert Beichner
Phys. Rev. ST Phys. Educ. Res. 2, 010105 – Published 15 March 2006

Abstract

The Brief Electricity and Magnetism Assessment (BEMA), developed by Chabay and Sherwood, was designed to assess student understanding of basic electricity and magnetism concepts covered in college-level calculus-based introductory physics courses. To evaluate the reliability and discriminatory power of this assessment tool, we performed statistical tests focusing both on item analyses (item difficulty index, item discrimination index, and item point biserial coefficient) and on the entire test (test reliability and Ferguson’s delta). The results indicate that BEMA is a reliable assessment tool.

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  • Received 23 June 2005

DOI:https://doi.org/10.1103/PhysRevSTPER.2.010105

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Authors & Affiliations

Lin Ding, Ruth Chabay, Bruce Sherwood, and Robert Beichner

  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA

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Issue

Vol. 2, Iss. 1 — January - June 2006

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