Support for this study was provided by NSF-CCLI 0942109. We thank the instructors and course coordinators who dedicated time to this study: Theresa Theodose, Heather Henter, Brian Perry, Carla Hass, Alan L. Baker, Clyde Herreid, Norris Armstrong, Farahad Dastoor, Michael R. Tansey, Denise Woodward, Kristen Porter-Utley, Leana Topper, Susan Piscopo, Rogene Schnell, Brent Ewers, John Longino, Waheeda Khalfan, Denise Kind, Scott Freeman, Jon Sandridge, Rebekka Darner, Peter Houlihan, Jacob Krans, Wyatt Cross, Peter Dunn, Don Waller, Scott Solomon, Benjamin Normark, Jason Flores, Teena Michael, Drew Joseph, Dmitri Petrov, Dustin Rubenstein, and others who wish to remain anonymous. We also thank the students in participating courses. Finally, we thank Tatiana Butler, Megan Higgs, Scott Freeman, and two anonymous reviewers for assistance with research, analysis, and manuscript revision. This research was exempt from the requirement of review by the Institutional Review Board, no. SK082509-EX.