Toward a methodology for the comparative study of political corruption

Robust explanations of political corruption demand that research progresses beyond purely theoretical analyses and single case studies. In this article, we highlight problems of definition, operationalization and measurement of corruption that have restricted the number of truly comparative, empirical studies of the phenomenon. We suggest a few steps that might help researchers overcome methodological obstacles in their study of corruption. We introduce and evaluate one example of how the phenomenon might be comparatively operationalized and measured. While not beyond criticism, the corruption index we present will undoubtedly help light new avenues toward more comprehensive explanations of comparative political corruption. This revised version was published online in July 2006 with corrections to the Cover Date.