Using multiple choice tests and a statistical method designed to identify flagrant cheaters, the authors undertook to determine (1) the magnitude of cheating on take-home and open-book exams; (2) whether the amount of cheating varied according to three types of examinations (closed-book, open-book or take-home); and (3) if cheating was affected by the type of credit awarded. There was little evidence of cheating on open-book and/or take-home examinations. It does not appear that cheating is more of a problem for open-book and take-home examinations than for closed-book types. Results indicate that motivational factors may affect the amount of cheating on examinations. (Author)