||A survey study reflects the impact of Mancur Olson's "The Rise and Decline of Nations" upon economics, political science, and partly sociology. The first area covers the growth of interest groups. Most micro-studies are found to conform with Olson`s findings (small groups with larger incentives need less time to resolve collective action problem). The second area examines "Olson`s hypothesis", namely that institutional stability undermines economic growth. In this field, econometric studies are found to be rather controversial. Finally, the author develops conclusions as regards the regulation of interest groups influence; a pluralist model with constitutional limits on funding by state is advocated. The author claims such a model is a logical normative consequence of "The Rise and Decline of Nations".