In boardrooms across the world, silence is often mistaken for harmony. But scratch beneath the surface and that same quietness can conceal missed opportunities, unchallenged assumptions, and ineffective governance.

The reality? When managed well, dissent is not disruptive for boards, it’s essential. It’s a sign of a board doing its job, rather than simply rubber-stamping decisions. It signals directors are thinking critically and putting the organisation’s long-term success above comfort or conformity.

How dissent drives performance

Contrary to popular belief, dissent doesn’t mean dysfunction. When directors challenge proposals, question strategies, or raise uncomfortable truths, they’re strengthening, not weakening, the board’s effectiveness.

Constructive dissent pushes boards into testing assumptions, refining ideas, and reducing the risk of groupthink. It also enhances transparency and improves decision-making, especially in complex or high-risk scenarios.

But there’s also a challenge accompanying this approach—genuine dissent in boardrooms is rare. And that rarity has more to do with board culture and structure than with the issues at hand.

What gets in the way?

Several factors hold directors back from speaking up. Those with close personal ties with CEOs or fellow board members often suppress dissent. Newer directors, too, may feel they haven’t yet ‘earned the right’ to speak out, leading them to stay silent when their voices are most needed.

Fear of damaging relationships or being seen as difficult often outweighs the urge to raise red flags.

Alternatively, those with financial independence, equity stakes or secure compensation are more likely to voice concerns. They’re less reliant on management and feel freer to act in shareholders’ best interests.

Dissent doesn’t have to be loud or dramatic. It can take the form of a ‘vote against’, a probing question, or even a quiet abstention. Sometimes, it’s conveyed through body language or just plain silence.

But when silence replaces scrutiny, the board can mistake compliance as consensus. This is dangerous. Boards might believe they’re aligned when, in fact, key concerns are left unspoken. Without open channels for disagreement, boards lose the very tension that drives better oversight.

Why diversity of thought matters

Diversity of thought, whether a result of gender, ethnicity, career background, or cognitive style, tends to increase constructive dissent. Directors from underrepresented groups, or with strong professional codes of conduct, are often more prepared to challenge the status quo.

This is important. A board that engages with differing perspectives is more likely to develop sound strategy, manage risk wisely, and respond effectively to stakeholder concerns.

In short, dissent isn’t oppositional, it’s generative. It sparks insight, drives accountability, and underpins good governance.

The chair sets the tone

No one has more influence on the boardroom climate than the chair. They ensure that dissent is not only tolerated, but actively welcomed.

The chair creates an environment of psychological safety, where directors can feel free to challenge without fear of ridicule or reprisal. They draw out quieter members, keep discussions on track, and ensure that debate stays focused on ideas, not individuals.

But when the chair is overly aligned with management, or quick to shut down debate, the board risks falling into passive mode, functioning more as a ceremonial body than a strategic guardian.

At the same time, dissent isn’t always productive.

Handled poorly, it can become personal, emotional, or disruptive. Tensions escalate, factions form, and trust erodes. These are signs of dysfunctional dissent, where the issues become less about disagreement, and more about unresolved conflict.

Warning signs include repeated absences, side meetings after the board session, passive-aggressive emails, or even sudden resignations.

When dissent turns toxic, the board’s performance ultimately suffers—and the organisation pays the price. In these cases, intervention may be needed, from independent board reviews through to changes in leadership or composition.

Politics around the table

Dissent doesn’t occur in a vacuum. Power dynamics, both inside and outside of the boardroom, shape what’s said and unsaid.

A dominant CEO who views the board as a mere formality can silence even the most experienced directors. Major shareholders or institutional investors, depending on their stance, can either support independent oversight, or shy away from visible conflict that threatens short-term stability.

Directors often find themselves navigating a web of competing interests, balancing loyalty, politics, and personal credibility with their core responsibility—serving the organisation and its stakeholders.

The strategic value of conflict

Boards that understand the value of cognitive conflict, where ideas rather than people clash, are better positioned to govern effectively.

Constructive conflict brings strategy into sharper focus. It challenges assumptions. It leads to better performance. But it also requires mutual respect, emotional intelligence, and a clear distinction between dissent and disruption.

Boards need to invest in creating the conditions for healthy disagreement—clear processes, strong facilitation, and a commitment to transparency.

Measuring a healthy board

If your boardroom never sees disagreement, don’t celebrate too quickly. This might not be a sign of unity, rather it could be a symptom of avoidance.

In high-performing boards, dissent is visible, thoughtful, and purpose-driven. It contributes to sharper discussions, better risk management, and more resilient strategies.

Directors who speak up are not trying to derail the board, they’re fulfilling their duty to question, scrutinise, and protect the organisation’s future. For dissent to support performance, it must be enabled through culture, leadership, and structure.

Chairs have to create the space. Directors need the courage, and boards should abandon outdated idea that harmony equals effectiveness.

Boards that engage with contradiction, rather than suppress it, build better organisations. They are more agile in the face of complexity, more robust under pressure, and more respected by stakeholders.

Disagreement isn’t the enemy of excellence—it’s the engine. When framed and managed well, dissent elevates the work of the board and drives better outcomes for everyone.

Andrew Kakabadse (1948-2025) was a lynchpin figure in UK and global corporate governance and professor of governance and leadership at Henley Business School. Nada Kakabadse is professor of policy, governance and ethics at Henley Business School.