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’m a graduate student who does a lot of grading. Canvas gives me an option to: 1. Hide students’ names while grading and 2. sort in order of submission instead of alphabetical order, so I make sure to use both of those options to reduce any biases like that.
Semi related: I'm studying for a Linux certification and at the end of each chapter they have 10 practice questions with answers in the back of the book. Almost every time, the explanations of the answers get shorter until there's basically just the answer by question 10. It feels like they just got tired of working
I used to be a teaching assistant at university, and never sorted by name. But based on my experience I don't think it's frustration that accounts for the disparity, it's that as you see more and more assignments you start getting a feel for common issues and are able to point them out more easily. I would always do two passes because of that to ensure that I normalized the weight of my marking.
I agree with this. It's a bit like the first 2 pancakes, you have to go back over the first half a dozen once you're in the zone.
I used to grade hard copies a lot, after I graded I'd put them in order from best to worst (numerical grades) and then do quick comparisons between an assignment and its neighbours in the pile. It's an easy way to "quality control".
As for the comments, that's a self-discipline issue. If you're giving, say, 4 positives and 4 negatives per assignment and have standard ways of phrasing, it shouldn't deteriorate.
surnames start with A, B, C, D or E received a 0.3-point higher grade out of 100 possible points than compared to when they were graded randomly. Likewise, students with later-in-the-alphabet surnames received a 0.3-point lower grade—creating a 0.6-point gap.