This is the opppsite of the effect they found. I do wonder if there is a big difference depending on grader and the study found some kind of average.
> The researchers collected available historical data of all programs, students and assignments on Canvas from the fall 2014 semester to the summer 2022 semester.
Thousands of students X 8 years X lots of assignments per year and you get a sample size so big that it would be hard not to find statistically significant effects.