As shown on the scanned answer key, this was an anonymous quiz. College students have a tendency to put in pathetically minimal effort on things they're not bei

As shown on the scanned answer key, this was an anonymous quiz. College students have a tendency to put in pathetically minimal effort on things they're not being directly graded on. Also, the quiz's stated purpose was to help the teacher calibrate the assignments; maybe some students purposely answered questions wrong in hopes of dumbing down the class. (Though I don't dispute the author's central point.)