One research study published in 2018 looks at how students tend to struggle in STEM courses, especially students of underrepresented minorities (URM). This study focuses on decreasing the achievement gap between URM (Latino, African-American, and Native American students) and non-URM (white and Asian students) groups by implementing interventions that impart studying strategies, such as spacing and self-testing, to see if the students' course grades improve. The reason for this intervention is to teach students who do not know how to study on their own how to do it effectively for STEM courses.