Practical and effective methods for detecting copying of multiple-choice test responses have been available for many years. These methods have been used routinely by large admissions and licensing testing programs. However, these methods are seldom applied in the areas of standardized or classroom testing in schools or colleges, and knowledge about them is not widespread. This paper reviews the various methods proposed by nine researchers or teams with respect to their effectiveness and applicability and discusses possible reasons that they are not more widely used. Not the least of these may be discomfort with how conclusively this form of academic dishonesty can be detected in the absence of more direct evidence. The methods recommend by W. H. Angoff (1974), the paired indicator methods of B. A. Hanson and others (1987), and the adjacent-non-adjacent method of C. E. Stegman and B. M. Barnhill (1981, 1982) are feasible for use in a large-scale testing environment. (Author/SLD)