Knowing your ABCs is essential to academic success, but having a last name starting with A, B or C might also help make the grade.
As graders go on grading, their comments become more frustrated and their good-will becomes much sloppier. At least that's the hypothesis to explain this. Researchers found the reverse effect on graders who sorted in reverse-alphabetical order.
I think blind marking is important. I have literally heard people objecting to proposed grades with phrases like "but he's a bad student" or "but she's really bright."
I can't imagine how, unless you only had 20 of them or something?
Back when I was a TA, I had an average of 120 students per semester and we didn't necessarily grade our own students' work (it was usually divided by topic).
So if I'm grading 120 assignments - or worse, 480 pieces of exam assessment- and only 25% of them are from students I regularly interact with, I don't think my subconscious has any idea 99% of the time.
Even with smaller classes... you're just seeing too many people with similar thoughts and styles over the course of a year for any of it to imprint on your mind that deeply. Occasionally it's going to be obvious, but I still think removing a level of bias through anonymizing is best practice.
So, you're arguing that randomness is an accurate and acceptable way to score a test?
I wonder how the students feel about that..
This isn't a flippant remark either. There's a much larger issue hiding in plain sight. If there's no relationship between the test and the marking then there's no point in using this process. In other words, this research appears to be saying something more profound than just commenting on the order of the tests.