“The grade point average score among students choosing the Pass/Fail scale is somewhat higher compared to students who choose the A-F grading scale. Reduced stress associated with writing the degree project motivates those who choose the Pass/Fail grading scale. Enhanced motivation to do a good job on the thesis work and perceived good chances of receiving an A grade motivate students who choose the A-F grading scale.” (p.1993)
Nyström, K. (2018). When students are allowed to choose: grading scale choices for degree projects. Studies in Higher Education, 43(11), 1993–2002. doi:10.1080/03075079.2017.1290062