Do Boards With Women in the Room Really Make Better Long-Term Decisions?

By Blossom Ukoha

“Diversity is being invited to the party; inclusion is being asked to dance.” — Verna Myers, Diversity and Inclusion Strategist

Every day, corporate boards make decisions that shape the future of businesses. They decide whether to invest in emerging technologies, acquire competitors, replace underperforming chief executives, enter new markets or weather economic downturns through cost-cutting or long-term investment. These are not decisions that affect the next quarter alone; they determine whether companies thrive or decline over decades.

As boardrooms become more diverse, a critical question has emerged: Do boards with women in the room really make better long-term decisions? Increasingly, global research suggests the answer is yes, not because women inherently make better leaders than men, but because gender-diverse boards bring broader perspectives, stronger oversight and more balanced decision-making. While diversity is not a guarantee of success, evidence indicates that companies with meaningful female representation on their boards are often better equipped to create sustainable value.

The Business Case for Gender-Diverse Boards

Corporate boardrooms have changed dramatically over the past decade. According to the MSCI Women on Boards and Beyond 2024 report, women now occupy approximately 26–28% of board seats across global large and mid-cap companies, nearly triple the level recorded in 2010.

Some countries have made remarkable progress. Women now hold approximately 43–45% of board positions in the United Kingdom’s FTSE 100 and FTSE 350 companies, while female representation across the US Russell 3000 has reached around 30%. Emerging markets remain behind at approximately 19%, particularly in technology, energy and industrial sectors.

Yet representation alone is not the real story. Investors are increasingly interested in whether gender diversity translates into better business outcomes.

Recent evidence suggests that it does.

Long-Term Performance Speaks Loudly

Several major studies have found a positive relationship between female board representation and sustained financial performance.

MSCI’s 2024 research reported that companies with at least 30% women directors achieved almost 19% higher cumulative shareholder returns between July 2019 and September 2024 than companies with fewer women on their boards.

Similarly, Bloomberg Intelligence found that companies with the most gender-diverse boards outperformed those with the least diversity by 2–5% annualised returns across developed markets since 2018, while also demonstrating lower share-price volatility.

McKinsey & Company’s Diversity Matters Even More (2023) report reached another important milestone, finding that companies ranked in the top quartile for board gender diversity were 27% more likely to outperform financially than those in the bottom quartile.

Although these studies do not prove that diversity alone causes better performance, they suggest that organisations embracing diverse leadership often make decisions that generate stronger long-term value.

Investing Beyond the Next Quarter

One of the clearest differences between successful boards and struggling ones is their willingness to invest in the future.

A compelling example is Belén Garijo, Chair of the Executive Board and CEO of Merck KGaA. Leading one of Germany’s foremost science and technology companies, Garijo has overseen sustained investment in biotechnology, healthcare research, and life sciences despite periods of global economic uncertainty. Rather than sacrificing innovation to improve short-term financial results, the company continued funding research that would drive future growth.

Her leadership reflects one of the strongest findings in recent governance studies: companies with meaningful female representation are more likely to support long-term investment in research, innovation and knowledge creation rather than prioritising immediate gains.

Better Governance Produces Better Decisions

Good boards are not measured solely by profits; they are judged by the quality of their oversight.

When Dame Sharon White became Chair of the John Lewis Partnership, she inherited one of Britain’s most challenging retail transformations. Instead of pursuing quick financial fixes, the board focused on long-term restructuring, digital transformation and strengthening the organisation’s future resilience.

Her leadership demonstrates how effective governance often requires difficult decisions that may not produce immediate rewards but protect an organisation’s long-term sustainability.

Research reinforces this observation. Studies consistently show that women directors participate actively in audit, governance and nomination committees, improving accountability and strengthening board oversight.

The Courage to Challenge Underperformance

One of the most important responsibilities of any board is holding executives accountable.

Research involving more than 31,000 US company observations found that gender-diverse boards were 72.8% more likely to replace underperforming chief executives, leading to measurable improvements in company performance over the following three years.

Former Mastercard Vice-Chair Ann Cairns has frequently argued that diverse boards ask better questions because members bring different experiences and challenge assumptions that homogeneous groups often accept without scrutiny.

Constructive disagreement, rather than unanimous agreement, often leads to better strategic decisions. Diverse boards are less likely to fall victim to groupthink and more willing to evaluate difficult issues from multiple perspectives before reaching conclusions.

Managing Risk for the Long Term

Today’s corporate boards face risks that extend far beyond financial statements. Cybersecurity, geopolitical instability, climate change and artificial intelligence all require careful oversight.

Phebe Novakovic, Chair and CEO of General Dynamics, operates in one of the world’s most complex industries, where investment decisions often span decades. Her leadership demonstrates the importance of disciplined governance, calculated risk management, and strategic patience.

Across Africa, Fatoumata Sanogo, a respected governance expert within the Central Bank of West African States (BCEAO), has also contributed significantly to strengthening financial oversight, transparency and institutional accountability. Her work illustrates that effective board leadership is not measured only by profitability but also by the ability to build resilient institutions capable of withstanding future challenges.

These examples reflect broader research linking female board participation with stronger governance, lower organisational volatility and improved crisis management.

Critical Mass Matters

Research also suggests that the benefits of diversity become most visible when women move beyond symbolic representation.

Several studies support the Critical Mass Theory, showing that boards with three or more women, or approximately 30% female representation, experience stronger governance outcomes than boards with only one female director. At this level, women are more likely to influence strategic discussions, challenge prevailing assumptions and contribute meaningfully to board decisions.

In other words, meaningful participation, not token appointments, is what drives long-term value.

The Evidence Is Strong, But So Are the Caveats

Despite growing evidence supporting gender-diverse boards, researchers remain careful not to oversimplify the relationship.

Some studies have found only modest or mixed effects depending on industry, country and corporate governance structures. Better-performing companies may also be more likely to appoint women because they already embrace progressive leadership practices. Likewise, diversity alone cannot compensate for poor governance, ineffective leadership or weak corporate strategy.

The quality, experience, and independence of every board member remain fundamental to effective decision-making.

In conclusion, the evidence suggests that they do, but not simply because women are present. Boards with meaningful female representation tend to make better long-term decisions because they benefit from broader perspectives, stronger oversight, greater accountability and more rigorous debate. Research consistently links gender-diverse boards with higher multi-year financial returns, improved risk management, stronger governance, greater innovation and better ESG outcomes. Leaders such as Belén Garijo, Dame Sharon White, Ann Cairns, Phebe Novakovic and Fatoumata Sanogo demonstrate how these qualities translate into real-world boardroom leadership.

However, diversity alone is not a guarantee of success. Effective governance still depends on appointing competent directors, fostering an inclusive board culture and ensuring women have genuine influence rather than symbolic seats. So, do boards with women in the room really make better long-term decisions? Based on the weight of current global evidence, yes. When women are meaningfully represented, they strengthen the quality of boardroom decisions and help organisations build more resilient, innovative and sustainable businesses.