Crime in the Classroom Part III: The Case of the Ultimate Identical Twin
David N. Harpp, James J. Hogan · Journal of Chemical Education · 1998
This paper describes an unusual case of academic misconduct which was detected by the computer program SIGNUM; both students eventually confessed. The student who gave the answers to their colleague rewrote a scrambled version of the original exam. The answers given on the make-up differed from the original in a "normal" fashion. That is, the same student, writing the same exam did not give answers which were unusually similar to the first exam, thus refuting the reason that students frequently give when confronted with a problem of copying- "We studied together and that is why our exams were so similar."