catcher is a software program designed to compute the [omega] index, a common statistical index for the identification of collusions (cheating) among examinees taking an educational or psychological test. It requires (a) responses and (b) ability estimations of individuals, and (c) item parameters to make computations and outputs the results of…

Academic dishonesty is unethical. Exam cheating is viewed as more serious than most other forms (Pincus and Schmelkin 2003). The authors review the general cheating problem, introduce a program to conservatively identify likely cheaters on multiple-choice exams, and offer a procedure for handling likely cheaters. Feedback from students who confess…

In 1990, the McGill University Senate established regulations governing how multiple-choice exams are to be conducted. The primary rules require multiple-version exams (scrambled question and if possible, scrambled answer positions) as well as assigned seating or seating with alternating rows of students from different courses. In recent years, we…

A statistical test for the detection of answer copying on multiple-choice tests is presented. The test is based on the idea that answers of examinees to test items may be the results of three possible processes: (1) knowing; (2) guessing; and (3) copying. Examinees who do not have access to the answers of other examinees can arrive at their…

A technique is described for reducing the incidence of cheating on multiple choice exams. One form of the test is used and each item is assigned multiple numbers. Depending upon the instructions given to the class, some students will use the first of each pair of numbers to determine where to place their responses on a separate answer sheet, while…

INTEGRITY, an item analysis and statistical collusion detection (answer copying) online application, was reviewed. Features of the software and examples of program output are described in detail. INTEGRITY was found to be easily utilized with an abundance of well-organized documentation and built-in features designed to guide the user through the…

A statistical test for detecting answer copying on multiple-choice items is presented. The test is based on the exact null distribution of the number of random matches between two test takers under the assumption that the response process follows a known response model. The null distribution can easily be generalized to the family of distributions…