A brain trust is a small group of knowledgeable advisors brought together to help solve a specific problem or guide important decisions. The term originated in American politics during the 1932 presidential campaign, but it has since become a common concept in business, nonprofits, and creative industries. Whether formal or informal, a brain trust works because it draws on diverse expertise that no single person could possess alone.
Where the Term Came From
New York Times reporter James Kieran coined the phrase “Brains Trust” to describe the group of academic advisors that Franklin D. Roosevelt assembled during his 1932 presidential campaign. The three principal members were Raymond Moley, Rexford G. Tugwell, and Adolph A. Berle, Jr., all professors at Columbia University. Others rotated in and out, but these three formed the core group that helped FDR develop policy positions on the economy, agriculture, and financial regulation during the Great Depression.
The term quickly entered the American vocabulary. Over time, the “s” dropped off and “brain trust” became the standard form. It came to describe any informal circle of experts that a leader relies on for candid advice, whether in government, business, or other fields.
How a Brain Trust Works Today
In its modern form, a brain trust is a small, deliberately assembled group (typically no more than a dozen people) that meets to share honest feedback on a specific challenge. The Rockefeller Foundation describes it as a “mind opener” session that brings together leaders to tap collective wisdom for the purpose of strengthening ideas. Unlike a standing committee or a board of directors, a brain trust is flexible: it can be convened for a single session or meet regularly, and its members have no formal authority over the person seeking advice.
The key ingredient is diversity of perspective. Members should come from different sectors, disciplines, or professional backgrounds. As one Forbes contributor put it, the goal is to create “positive collisions” between divergent viewpoints, generating ideas that would never emerge if everyone shared the same expertise. A well-functioning brain trust might include two analytical thinkers and two creative ones, or mix people from finance, design, operations, and marketing.
Brain Trust vs. Advisory Board
People sometimes use “brain trust” and “advisory board” interchangeably, but there are real differences. A fiduciary board has legal responsibilities to shareholders and can face consequences for failing those duties. An advisory board sits one step below that: it provides expertise the company lacks but carries no legal liability. A brain trust is even more informal than an advisory board. It has no fixed structure, no governance requirements, and no obligation to meet on a schedule. Stanford’s Graduate School of Business notes that an advisory board “is what you want it to be,” and a brain trust takes that flexibility even further.
In practice, a brain trust often functions as a personal resource rather than an organizational one. A CEO might have a brain trust of five trusted peers she calls when facing a strategic decision. A nonprofit director might assemble one for a weekend to rethink a program. The lack of formal structure is the point: it removes hierarchy and encourages candor.
The Pixar Model
One of the most famous modern brain trusts operates at Pixar Animation Studios. The company developed a specific meeting format built around three ground rules: no one in the room has authority to force changes, the presenter doesn’t defend their work, and the group focuses on identifying problems rather than proposing solutions.
If someone starts offering fixes, the facilitator redirects the conversation back to what specifically feels off about the current approach. If the presenter begins explaining why they made a certain choice, they’re reminded that the session is just for listening. Pixar’s philosophy is that decision-making improves when you draw on “the collective knowledge and unvarnished opinions of the group.” The structure exists specifically to prevent egos and defensiveness from filtering out the honest feedback that makes the process valuable.
This model has been widely adopted outside the film industry. Startups, consulting firms, and leadership programs now run “brain trust style” feedback sessions using variations of Pixar’s rules.
Brain Trusts in Action
The concept shows up across a wide range of fields. The Alzheimer’s Association runs what it calls the ALZBrainTrust, a collaborative initiative that brings together researchers, community organizations, and project leaders to address underrepresentation in dementia-related clinical trials. The initiative focuses on expanding access to care and increasing Black and Hispanic American participation in Alzheimer’s research, convening partners from across the country to share progress and coordinate strategy.
In entrepreneurship, brain trusts tend to be smaller and more personal. One example cited in Forbes involved 10 businesswomen who volunteered their time to contribute ideas, solutions, and professional connections to help a founder grow her company. Another consisted of just four people, two with analytical backgrounds and two with creative ones, whose different perspectives generated solutions none of them would have reached individually.
What Makes a Brain Trust Effective
Size matters. Groups larger than about 12 people tend to lose the intimacy that makes honest conversation possible. The most effective brain trusts are small enough that every member speaks, but diverse enough that genuine disagreement occurs.
Candor is the currency. A brain trust that tells you what you want to hear is worthless. The entire value comes from people who are willing to point out weaknesses, challenge assumptions, and say things that might be uncomfortable. That’s why Pixar’s ground rules exist: they create a safe space for blunt feedback by removing the threat that someone will use authority to override the creator’s vision.
The person seeking advice also has a role to play. In the Pixar model, the presenter’s job is to listen and take notes, not to argue or explain. This discipline is harder than it sounds, but it’s what separates a productive brain trust from a debate that ends with everyone defending their original positions.
Finally, a brain trust works best when members have no stake in the outcome. Unlike employees or investors, outside advisors can afford to be objective. They aren’t protecting a budget, defending a past decision, or angling for a promotion. That independence is what made FDR’s original group of Columbia professors so valuable in 1932, and it’s what continues to make the model useful nearly a century later.