If you take the first version of the final and the results is higher than your lowest grade of the first two exams, it will replace that lowest grade. If you take the second version of the final and the result is higher than your lowest grade of the second two exams, it will replace that lowest grade. You are also required to participate in the human subjects' prescreening . See the attached information. See the attached pages concerning experimental participation.
Participation is optional.
This means that 6 experimental credits can be used to raise your grade.