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.
|Autonomous and Independent||Significant independence from any one interest group or donor and autonomous in its operation and funding from government.|
|Quasi Independent||Autonomous from government but controlled by an interest group, donor, or contracting agency that provides a majority of the funding and has significant influence over operations of the think tank.|
|Government Affiliated||A part of the formal structure of government.|
|Quasi Governmental||Funded exclusively by government grants and contracts but not a part of the formal structure of government.|
|University Affiliated||A policy research center at a university.|
|Political Party Affiliated||Formally affiliated with a political party.|
|Corporate (for profit)||A for-profit public policy research organization, affiliated with a corporation or merely operating on a for-profit basis|