This study investigates the effectiveness of Open Education Resources (OER) and research-based learning. A quantitative analysis was conducted on students enrolled in Macroeconomic courses at a City University of New York (CUNY) community college in Spring 2018 and Spring 2019. Prior studies have shown the positive effects of conducting research in natural sciences. Yet, there is a lot to be inquired about regarding the impact of researchbased learning on social sciences and the use of OER materials as a cheaper and more equitable alternative to commercial textbooks. Additionally, this study evaluates the academic effectiveness of research-based learning through assessment scores through a new indicator, the growth mindset profile. Findings should be used to assess critically research-based learning applications incorporated with OER materials and open pedagogy, as well as to consider the duration, wide application throughout the program rather than isolated courses, and design of course assignments and research projects to engage students actively and effectively.