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© 2013 P. M. Sadler et al. CBE—Life Sciences Education © 2013 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 work was carried out with support from the NSF's grant for MOSART-LS (NSF EHR-0830922) and from the NIH's grant for ALSISE (NIH 1RC1HD63686-01). We thank those scientists who reviewed and commented on the items in the development process. Annette Trenga handled data input and tracking of test forms. We appreciate the advice and support of Charles Alcock of the Harvard Smithsonian Center for Astrophysics. We greatly appreciate the involvement of teachers and their students in this project, without whom this research would have been impossible. This project was conducted with the approval of Harvard University's Committee on the Use of Human Subjects (protocol #F15916-101).