Think Tank

A think tank is an organization that conducts research and advocacy on public policy questions, covering areas such as economics, social policy, foreign affairs, defense, and technology, with the goal of informing or influencing government decisions, media coverage, and public debate. Most think tanks are nongovernmental, though some operate as formal government agencies and others maintain close ties to a political party, an industry, or a branch of the military. Their output ranges from rigorous, peer-reviewed research to overtly advocacy-driven position papers, and the quality and ideological orientation of think tanks vary enormously across the roughly several thousand such institutions operating worldwide today.

Historical origins

Historians trace the general practice of organized policy advice back to royal advisory councils in medieval Europe, but the modern think tank as a distinct institutional form emerged in 19th and early 20th century Britain, with the Royal United Services Institute, founded in 1831 to study military affairs, and the Fabian Society, founded in 1884 to advance gradualist socialist policy, among the earliest examples. In the United States, the Carnegie Endowment for International Peace, established in 1910, is generally considered the oldest American institution that would be classified as a think tank under modern definitions. The Cold War drove a significant expansion of Western think tanks focused on defense and foreign policy, and the pace of new think tank formation accelerated sharply worldwide after 1980, producing thousands of new institutions across both established and developing democracies, a trend researchers have linked to the growing complexity of modern governance and the demand for specialized expertise it created.

How think tanks are funded

Most think tanks rely primarily on private donations from individuals, foundations, and corporations, though many also accept government grants or contracts for specific research projects. Funding sources often shape, whether subtly or directly, which questions a think tank chooses to study and how it frames its conclusions, and watchdog groups and journalists have periodically raised concerns about corporations, foreign governments, and political operatives using donations to buy credibility or influence for positions that serve their own interests rather than disinterested research. By the early 2010s, the largest American think tanks were collectively spending well over a billion dollars a year, a scale of resources that gives the most prominent institutions substantial influence over policy debates in Washington and other national capitals around the world.

Notable examples

The Brookings Institution, founded in 1916 and generally regarded as nonpartisan, is among the most frequently cited think tanks in American media and policy circles, publishing thousands of reports and papers each year across a wide range of domestic and foreign policy topics. The RAND Corporation, founded in 1946 as a spinoff of the aircraft manufacturer Douglas Aircraft and operating independently since 1948, became the prototype for the defense-focused think tank, conducting influential research on nuclear strategy, military technology, and systems analysis for the United States government. The Heritage Foundation, a prominent think tank associated with conservative and Republican policy positions, has had substantial influence over recent Republican administrations, illustrating how closely some think tanks align with a specific party or ideological movement rather than operating as neutral research bodies.

What think tanks actually do

Beyond publishing reports, many think tanks testify before legislative committees, brief government officials and journalists directly, host public events and conferences, and in some cases draft model legislation that lawmakers can adopt wholesale or adapt for their own jurisdictions. Revolving-door relationships are common, with think tank staff moving into government positions when their preferred party takes power and returning to research roles when it loses office, which gives institutions continuity of policy expertise across changes in administration but also raises persistent questions about how independent their research really is from the political interests of their alumni and funders.

Criticism and debate

Critics argue that many think tanks function essentially as advocacy organizations dressed in the language of neutral research, producing work calibrated to support conclusions their funders or affiliated party already favor rather than following evidence wherever it leads. Defenders counter that even openly ideological think tanks perform a valuable function by developing detailed, technically serious policy proposals that elected officials and their staff, who often lack the time or expertise for original research, can draw on directly. Because think tanks occupy this ambiguous space between scholarship and advocacy, readers are generally advised to consider a think tank’s funding sources, institutional affiliations, and track record alongside the substance of any individual report before treating its conclusions as straightforwardly neutral.

FAQs

What is the oldest American think tank?
The Carnegie Endowment for International Peace, established in 1910, is generally considered the oldest American institution classified as a think tank under modern definitions.

How are most think tanks funded?
Primarily through private donations from individuals, foundations, and corporations, with many also accepting government grants or contracts for specific research projects.

What is the RAND Corporation known for?
Founded in 1946, it became the prototype for the defense-focused think tank, producing influential research on nuclear strategy, military technology, and systems analysis.

Are think tanks neutral research institutions?
Not always. Quality and ideological orientation vary widely, and some think tanks function closer to advocacy organizations for a party, industry, or ideological movement than to disinterested research bodies.

What is the revolving door in think tank staffing?
The common pattern of researchers moving between think tank positions and government jobs as their preferred party gains or loses power, which builds policy expertise but also raises independence concerns.

Editorially reviewed by Specialty Digest Editorial TeamLast reviewed November 2, 2026Researched and drafted with AI assistanceReport an issue