OER Knowledge CloudJournal ArticleLawrence, Christopher N.Lester, Julie A.In this article, we present findings from a grant-funded initiative to replace traditional, proprietary textbooks with an open content textbook under a Creative Commons license in the introductory American government course (POLS 1101) at Middle Georgia State University. We find that the use of an open content textbook led to somewhat negative effects on student learning outcomes and student course satisfaction, although the associated lower textbook cost increased textbook accessibility to students. We conclude with some suggestions to those adopting textbooks in this course and to the wider discipline regarding measures that may lead to more unequivocally positive outcomes than those experienced in this study.20182018/02RoutledgeJournal of Political Science Education144555-566United States10.1080/15512169.2017.14227391551-2177yesAmerican governmentgeneral educationOpen Educational ResourcestextbooksEvaluating the Effectiveness of Adopting Open Educational Resources in an Introductory American Government Course.pdfUnited States, North America