“…As exams are externally imposed on students, they seem generally more likely to increase detrimental forms of motivation in most students by undermining more beneficial study motivation due to an overjustification or corruption effect (Amabile et al, 1976;Burgess et al, 2004;Deci, 1971;Tang & Hall, 1995). In fact, students tend to switch to more superficial learning strategies toward the end of the semester which can be seen as an indicator for more detrimental study motivation (e.g., Deci, 1971;Naujoks & Händel, 2020;Vansteenkiste et al, 2005). According to this line of thought, the increased probability of study activities we observed would be driven by more detrimental forms of motivation, which seems compatible with the notion of "cramming" before exams (e.g., Howell et al, 2006;Taraban et al, 1999).…”