What ten years of CEO research actually found
The stereotype of the successful chief executive — charismatic, Ivy League–educated, visionary, six feet tall, intuitive under pressure — is one of the most persistent images in business culture. It also turns out to be largely wrong. The most rigorous research available, the CEO Genome Project conducted by ghSMART in partnership with economists at the University of Chicago and Copenhagen Business School, examined 17,000 executive assessments and over 2,000 CEOs in detail. The result was a list of four specific behaviors that consistently distinguish high-performing CEOs from average ones — and none of them is charisma.
The four behaviors: deciding with speed and conviction, engaging for impact, adapting proactively, and delivering reliably. The research is striking partly for what it didn’t find. Industry background, gender, height, personality type, education credentials, and the qualities that get profiled in business magazines all showed much weaker correlations with performance than these four behaviors. This is good news, because behaviors can be developed. Pedigree and personality largely cannot.
1. Deciding with speed and conviction
Top-performing CEOs make decisions faster than average peers, recognize that a slightly wrong decision is usually better than no decision at all, and don’t wait for perfect information. McKinsey research has found that companies with decisive leaders are 4.2 times more likely to be organizationally healthy compared with peers.
The behavior is not the same as making impulsive calls. Decisive CEOs typically have a clear process for deciding when enough information has been gathered. They have written criteria for what would make them change their mind. They commit clearly so the organization can move, and they own the decisions afterward — including the wrong ones. The CEOs who struggle with this often have the opposite habit: they pull together more data, schedule more meetings, gather more input, and the organization stalls waiting for direction that doesn’t come.
2. Engaging for impact
The second behavior is about how CEOs work with stakeholders — investors, board members, employees, customers, regulators. The pattern: effective CEOs spend disproportionate time understanding what each stakeholder actually cares about, then aligning them around a shared definition of value creation. They don’t seek consensus on every decision (that would conflict with the first behavior). They build enough trust and shared understanding that they can make hard calls and the organization will follow.
This is harder than it sounds. The instinct for many leaders is either to be too consensual (which produces slow decisions and weak commitment) or too autocratic (which produces alienation and quiet sabotage). The behavior the research identifies sits in the middle: active engagement and listening before decisions, decisiveness in the decision itself, and disciplined follow-through that keeps stakeholders aligned even when individual decisions don’t go their way.
3. Adapting proactively
The third behavior may be the most strongly predictive. According to the research, CEOs who excel at adapting are 6.7 times more likely to succeed than peers who don’t. Adaptable CEOs spend significantly more of their time scanning for shifts in the external environment — customer behavior, competitive landscape, technology, policy — and adjusting strategy when evidence demands it.
The behavior requires explicit habits. Adaptable CEOs write down the assumptions behind their strategy and revisit them on a defined schedule. They build feedback loops that surface dissonant information rather than filter it out. They invest time in inputs that don’t pay off in the current quarter — reading widely, talking to customers outside their core segment, meeting with peers in adjacent industries. They show genuine willingness to change course rather than rationalizing the original strategy after the facts have changed.
4. Delivering reliably
The fourth behavior sounds simple but is the hardest of the four. Reliable CEOs consistently meet the commitments they make — to boards, investors, employees, and customers. The reliability isn’t about always hitting ambitious targets; it’s about making realistic commitments and meeting them, building trust over time. CEOs who routinely overpromise and underdeliver — even when the misses are by small margins — erode the trust capital that everything else depends on.
This requires honest forecasting (which is harder than aspirational forecasting), careful commitment-making (which means pushing back on board or investor expectations when they exceed what the business can credibly deliver), and disciplined follow-through. CEOs who consistently meet their commitments build a kind of trust that compounds across every other dimension of the job — capital access, talent attraction, board relationships, customer confidence, employee belief that this leadership will see things through.
The traits that don’t predict performance
The research is striking partly for what it ruled out as significant predictors.
Industry experience. CEOs hired from outside an industry perform roughly as well as insiders. The “industry knowledge” advantage is much smaller than boards typically assume.
Educational credentials. Where the CEO went to school, what they studied, and whether they have an MBA show weak correlations with performance. The hiring filter exists for sorting; it doesn’t predict who succeeds in the role.
Personality type. Introverted CEOs perform roughly as well as extroverted ones. The presence or absence of “charisma” — itself a vague concept — does not consistently predict outcomes.
Gender, height, and physical presence. The image of the tall white male CEO is statistical reality in many corporate environments but does not reflect actual performance differences.
What 2026 has added to the picture
More recent McKinsey research has expanded the framework for what high-performing CEOs do in the current environment. Particularly important in 2026: the ability to maintain calm and clarity through compounding uncertainty (tariffs, geopolitics, AI disruption, climate impacts), the discipline to measure and manage organizational culture rigorously (the research finds this more than doubles the odds of strategy execution and delivers triple the long-term shareholder return), and the willingness to invest in resilience explicitly — both organizational and personal.
The expanded picture doesn’t replace the four core behaviors; it sits on top of them. Decisive, engaging, adaptive, reliable leaders who also invest in organizational health and resilience consistently outperform peers who lead through charisma and instinct alone.
The implication for boards and aspiring CEOs
For boards, the research has clear implications for CEO selection. Behaviors observable in past roles — speed of decision-making, track record of adapting strategy when evidence changed, reliability against commitments — are far better predictors than the credentials boards typically weight. The discomfort is that these behaviors are harder to evaluate from a resume than degrees and tenure. The reward is that boards using behavior-based assessments make better selections and see them validated in performance.
For executives aspiring to the role, the implication is more direct. The four behaviors can be developed. Practice making faster decisions with explicit decision criteria. Build genuine relationships with stakeholders across the organization. Document your strategic assumptions and force yourself to revisit them on schedule. Be honest about what you can deliver and meet those commitments reliably. None of this is fast, and none of it is glamorous — but it consistently produces the outcomes that actually matter, regardless of how tall or charismatic you happen to be.
