Rankings of countries by perceived corruption have emerged over the past decade as leading indicators of governance and development. Designed to highlight countries that are known to be corrupt, their objective is to encourage transparency and good governance. High rankings on corruption, it is argued, will serve as a strong incentive for reform. The practice of ranking and labeling countries "corrupt," however, may have a perverse effect. Consistent with Social Labeling Theory, we argue that perceptual indices can encourage the loss (...) of needed investment and, thus, contribute to higher rates of corruption within unfavorably ranked countries. In effect, corruption indices may inhibit foreign direct investment, the effect of which is to encourage the status quo in terms of corruption ranking. Using an experimental study design, we test the effects of country corruption rankings on the assessment of country investment desirability and find ranking exposure causes shifts in country investment desirability for 10 of 12 countries studied. These findings suggest that corruption rankings, which are based on perceptions of corruption, may cause country isolation and a reduction in legitimate means of investment. (shrink)