The authors analyze results of a survey of members of the Columbia University Graduate School of Business classes of 1953–1987 in order to assess the potential effectiveness of firms' ethics training programs. Results suggest that such training has a positive effect, but that relatively few firms provide such programs (about one-third of the respondents worked for firms with such programs). Although the sample is not representative of American employees and managers generally, the results suggest that it may be worthwhile for (...) firms to provide formal ethics training to their employees. (shrink)