Think tanks are public policy research institutes that provide research, independent analysis and advice on domestic and international issues. These organizations employ experts from academia and government who publish a wide range of scholarship including working papers, proceedings from conferences, books, journals and policy briefs. To date there are nearly 6,545 of these organizations currently operating worldwide.
The Global Go-To Think Tanks Report is a comprehensive ranking of the leading think tanks worldwide. The annual report is written by Professor James McGann, director of the Think Tanks and Civil Societies Program at the University of Pennsylvania. The Penn Libraries' Scholarly Commons Repository holds a collection of the TTCSP Global Go To Think Tank Index Reports starting with the 2008 Report, as well as related documents. The annual reports are linked below. The lists in this guide come from the 2017 Report, which was published in early 2018.
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