> I wonder whether that was ever researched in depth
Yes, it was. My wife studied linguistics and she has an MSc in Education, she has tens of books on grading and evaluating English learners, and GRE is a test that has been studied extensively. I don't have any reference at hand (on my mobile) but feel free to search on any education-related journal: you'll find tons of sudies.
Yes, it was. My wife studied linguistics and she has an MSc in Education, she has tens of books on grading and evaluating English learners, and GRE is a test that has been studied extensively. I don't have any reference at hand (on my mobile) but feel free to search on any education-related journal: you'll find tons of sudies.