© 2012 A. C. Maskiewicz et al. CBE—Life Sciences Education © 2012 The American Society for Cell Biology. This article is distributed by The American Society for Cell Biology under license from the author(s). It is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0).

This research was supported by NSF-DUE grants 0919992 and 0920186 to principal investigators Charlene D'Avanzo (Hampshire College), Charles Anderson (Michigan State University), and Alan Griffith (Mary Washington University). We appreciate the help given by Brook Wilke (Michigan State University) and Laurel Hartley (University of Colorado, Denver) in coding the DQCs. We thank the professors at Hampton University and James Madison University for sharing their DQC data with us. We also thank our students for their participation in this project and our institutions for their support. Finally, we thank Laurel Hartley, Charlene D'Avanzo, and the reviewers and editor for their substantive comments for improving this paper.

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