How to Measure CEO Aptitude: 5 Surprising Research Findings

How Company Size Amplifies the Trait Gap

How Company Size Amplifies the Trait Gap

Research suggests there is a clear gradient: the larger the firm a CEO leads, the higher their measured traits tend to be. The study categorized firms by asset size, with large firms defined as those with assets above approximately 10 billion Swedish kronor and small firms below roughly 100 million. Across this spectrum, both cognitive and non-cognitive scores rose consistently with firm size. Height followed the same pattern, with large-firm CEOs standing approximately 3 centimeters taller than their small-firm counterparts on average.

• Small-firm CEOs: Cognitive score approximately 6.0; non-cognitive score approximately 6.1.
• Large-firm CEOs: Cognitive score approximately 7.2; non-cognitive score approximately 7.4.
• Difference: Roughly 0.7 standard deviations in cognitive ability — a meaningful but not extreme gap.

The gradient makes intuitive sense: running a larger organization involves greater complexity, more stakeholders, and higher-stakes decisions, which may place a premium on stronger all-round capability. However, the differences between firm sizes are not enormous — they resemble the difference between a very strong student and an exceptionally strong one, rather than the difference between a novice and an expert.

Non-Cognitive Ability: The Most Powerful Predictor in the Executive Personality Profile

What Are Entrepreneur Personality Traits? Who Succeeds?

Of all 3 measured traits, non-cognitive ability showed the strongest statistical relationship with reaching CEO status — with a regression coefficient approximately twice as large as that of cognitive ability. Non-cognitive ability, as defined in this research context, encompasses personality-adjacent qualities assessed through structured interviews at age 18. The evaluators rated recruits on 5 dimensions:

• Sense of responsibility: Taking ownership of tasks and following through on commitments.
• Perseverance: Sustaining effort over time, especially when facing obstacles.
• Emotional stability: Maintaining composure and consistent behavior under pressure.
• Initiative: Proactively identifying and acting on opportunities without being told.
• Social maturity: Navigating group dynamics and interpersonal situations effectively.

In the regression analysis, the coefficient for non-cognitive ability was approximately 0.59, compared to 0.31 for cognitive ability — a roughly 2-to-1 ratio in predictive strength. Height contributed a smaller but still statistically significant coefficient of around 0.12. When researchers calculated the combined weight of all 3 traits, non-cognitive ability accounted for approximately 58% of the composite score, cognitive ability for roughly 31%, and height for about 12%.

Why might personality-related traits outweigh raw thinking power? Leadership roles inherently involve motivating others, navigating ambiguity, and making judgment calls under uncertainty — domains where emotional stability and drive arguably matter more than pure calculation speed. Think of it like a school sports team captain: the highest exam scorer does not always make the best captain. The person who holds the group together under pressure often does.

Does Height Really Matter for CEO Leadership Aptitude?

Research indicates that physical height does have a small but measurable association with reaching senior leadership positions, though its practical importance is modest. In the dataset, the average height of the male population was approximately 179 centimeters, while large-firm CEOs averaged around 183 centimeters — a difference of about 3 centimeters. The researchers estimated that each additional centimeter of height was roughly equivalent in predictive value to approximately 0.9 IQ points.

One plausible explanation is that height influences first impressions and perceived confidence, which may subtly affect how individuals are evaluated during career-defining moments such as promotions or board interviews. However, it is critical to note that height is the weakest of the 3 predictors by a significant margin, and the data certainly do not suggest that tall people are destined to lead or that shorter individuals face an insurmountable disadvantage. It is a contributing thread in a much larger fabric.

Why Having the Character of a Great Leader Is Not Enough on Its Own

Why Work Addiction Happens: 5 Personality & Science Causes

Perhaps the most striking finding of the entire study is that the traits associated with CEO success are shared by a very large number of people — most of whom never become CEOs. When the researchers counted how many individuals in the dataset matched or exceeded the median large-firm CEO on the combined composite score, the number came to approximately 60,000 men. Yet the study identified only a small fraction of that group as large-firm CEOs. More than 100 times as many people with equivalent or superior trait profiles ended up in middle management or smaller leadership roles.

How to Spot the Dark Triad! 3 Types of Bad Actors Explained

This finding has profound implications for how we think about leadership trait theory. The classic version of trait theory — sometimes called the “great man” or born leader science perspective — assumes that exceptional leaders possess exceptional characteristics that set them apart from nearly everyone else. The data complicate that narrative considerably. Being in the top 5% on a composite of cognitive ability, non-cognitive ability, and height is genuinely unusual. But at a national population scale, it still describes tens of thousands of people. The bottleneck is not the supply of qualified individuals; it is the number of top executive positions available.

Psychopath Boss Harms Subordinates Just by Existing! Solutions

Family-Owned Firms and the Narrowing of the Selection Pool

An instructive comparison within the study involves family-owned versus non-family firms, where successor CEOs — those who inherited the role — tended to show measurably lower trait scores. Specifically, family successors scored approximately 0.27 standard deviations lower on cognitive ability compared to externally recruited CEOs leading firms of similar size. This is not a negligible gap.

The most likely explanation is straightforward: when a CEO position is filled by inheritance, the effective candidate pool shrinks from potentially thousands of qualified individuals to whoever happens to be in the family. Restricting the search in this way statistically lowers the probability of selecting someone from the upper range of the trait distribution. This finding serves as an indirect validation of the study’s core premise — if traits genuinely predict CEO performance, then selection processes that ignore traits in favor of family ties should, on average, produce lower-scoring leaders. The data appear to confirm that pattern.

What Explains CEO Compensation If Traits Only Account for About 10%?

What Explains CEO Compensation If Traits Only Account for About 10%?

Another revealing detail from the research concerns pay: large-firm CEOs earned roughly 12 times the average wage, yet the 3 measured traits explained only approximately 10% of that compensation gap. If cognitive ability, personality traits, and height were the dominant drivers of executive success and reward, we would expect these factors to explain a much larger share of the pay premium. The fact that they explain only about 10% suggests that a substantial portion of CEO compensation — and presumably of what it takes to reach the top — is driven by factors the study could not fully capture.

Those unmeasured factors likely include accumulated professional experience, industry-specific knowledge, social networks and mentorship, timing and circumstance, organizational politics, and simple luck. This aligns with what many leadership scholars have argued for decades: raw aptitude sets a floor, but the ceiling is shaped by a complex interplay of context, relationships, and opportunity.

Personality Traits of Workplace Bullies: How to Spot Them

Actionable Insights: What This Research Means for Your Own Leadership Path

Personality Traits That Lead to Resignation: Research Guide

Strengthen Non-Cognitive Traits First — They Matter Most

Because non-cognitive ability accounts for roughly 58% of the composite trait profile associated with CEO status, investing in personality-adjacent skills is likely the highest-leverage activity for anyone with leadership aspirations. Why it works: emotional stability, perseverance, and initiative are trainable to a meaningful degree, unlike some aspects of raw cognitive speed. How to practice: Deliberately seek out roles or projects that place you in high-pressure situations requiring follow-through — project leadership, volunteer coordination, team sports captaincy, or entrepreneurial side projects. Reflect regularly on how you respond to setbacks. Over time, these experiences build the stable, action-oriented disposition the research associates with senior leadership.

Do Not Dismiss Cognitive Development — But Do Not Obsess Over It Either

Cognitive ability still contributes approximately 31% of the CEO trait composite, so intellectual sharpness genuinely matters. Why it works: Leaders of large, complex organizations face information-dense decisions regularly; stronger reasoning ability helps process that complexity faster and more accurately. How to practice: Read broadly across disciplines, engage with quantitative reasoning tasks, practice structured argumentation, and seek feedback on the logical coherence of your plans. However, remember that you do not need to be in the top 1% — reaching a level of solid analytical competence is far more important than chasing genius-level scores.

Treat Opportunity and Network as Multipliers, Not Shortcuts

Since approximately 90% of CEO compensation variance remains unexplained by measured traits alone, external factors — networks, mentors, timing, visibility — carry enormous weight. Why it works: Many people with strong leadership traits never reach top roles simply because they are not visible to the right decision-makers at the right time. How to practice: Actively invest in professional relationships, seek sponsors (not just mentors) who can advocate for you, and position yourself in roles that offer high visibility within your organization. Consistent, reliable performance in these visible roles compounds over time into a track record that opens doors that raw ability alone cannot.

Avoid the “I’m Not Special Enough” Trap

The finding that approximately 60,000 people matched or exceeded the median large-firm CEO’s trait composite should be encouraging, not discouraging. Why it works: Self-limiting beliefs rooted in the myth of the born genius cause many capable people to self-select out of leadership opportunities before they even begin competing. How to practice: When you hesitate to raise your hand for a leadership role, ask yourself whether your hesitation is based on actual capability gaps or on an unfounded belief that leaders are a fundamentally different category of human. The research suggests the latter assumption is largely incorrect.

Frequently Asked Questions

Are leaders born or made, according to scientific research?

Research suggests the answer is “both, but neither exclusively.” Studies indicate that certain traits measured as early as age 18 — including cognitive ability, emotional stability, perseverance, and initiative — are associated with higher rates of reaching senior leadership positions. However, the same research shows that the vast majority of people with those traits never become top executives, implying that experience, environment, opportunity, and circumstance play equally important roles. The born leader science framework is best understood as describing a set of helpful starting conditions, not a predetermined destiny.

What cognitive ability level do CEOs typically have?

Research indicates that CEOs of large firms tend to score in approximately the top 17% of the general population on cognitive ability assessments — well above average, but not in the top 1% that popular culture often implies. When combined with non-cognitive traits and height, large-firm CEOs as a group rank in roughly the top 5% on a composite measure. This places them in a similar intellectual range to physicians and other competitive professionals, rather than in a category of extreme cognitive outliers.

Which personality traits are most associated with becoming a CEO?

Based on large-scale leadership aptitude research, non-cognitive traits — particularly perseverance, emotional stability, initiative, responsibility, and social maturity — tend to be the strongest predictors of reaching CEO status, with approximately twice the statistical weight of cognitive ability in regression analyses. These traits are measured through behavioral indicators rather than standardized tests, and they reflect the kind of resilient, action-oriented, socially intelligent disposition that managing large organizations appears to demand. Cognitive ability also matters significantly, but personality-adjacent qualities seem to be the more decisive differentiator.

Can someone become a CEO without being exceptionally intelligent?

Studies indicate that reaching CEO level does not require top-1% intelligence. Large-firm CEOs in major research samples score in approximately the top 17% on cognitive assessments — meaningfully above average, but a level attainable by a substantial portion of the population. Importantly, non-cognitive traits such as perseverance and emotional stability appear to predict CEO attainment more strongly than raw cognitive scores. This suggests that someone with solid but not extraordinary intellectual ability, combined with strong personality traits and strategic career positioning, has a realistic pathway to executive leadership.

Why do so many capable people never become CEOs despite having the right traits?

Research suggests this is primarily a structural supply-and-demand problem rather than a failure of individual potential. Studies indicate that approximately 60,000 individuals in a national sample of 1.3 million matched or exceeded the median large-firm CEO on a composite of measured traits — yet only a tiny fraction of them held large-firm CEO positions. The number of top executive roles is simply far smaller than the pool of qualified candidates. Factors such as professional visibility, network access, organizational timing, and chance encounters with sponsors or opportunities appear to play a substantial role in determining who among the qualified pool ultimately reaches the top.

Do family-business CEOs differ in traits from externally hired CEOs?

Research indicates they tend to, yes. Studies suggest that CEOs who inherit a family business role score approximately 0.27 standard deviations lower on cognitive ability compared to externally recruited CEOs of similarly sized firms. The likely explanation is a narrower selection pool: when candidates are drawn exclusively from within a family rather than from the open market, the statistical probability of identifying someone in the upper range of the trait distribution decreases significantly. This finding indirectly supports the idea that broader, merit-based selection processes tend to surface higher-scoring candidates more reliably.

How much does height actually matter for executive leadership?

Height has a small but statistically detectable association with reaching CEO status. Research estimates that each additional centimeter of height is roughly equivalent in predictive value to approximately 0.9 IQ points in cognitive ability terms. Large-firm CEOs tend to average about 3 centimeters taller than the general male population in relevant datasets. However, height is the weakest of the 3 measured predictors, accounting for only approximately 12% of the composite trait score associated with CEO attainment. It may influence first impressions or projected confidence, but it is by no means a determining factor in leadership success.

Summary: What the Science of Leadership Traits Really Tells Us

The evidence from one of the largest leadership studies ever conducted paints a picture that is both humbling and genuinely encouraging. The character of a great leader does involve measurably stronger cognitive ability, more robust non-cognitive traits like perseverance and emotional stability, and even a modest physical edge — but the differences are degrees of the same human qualities, not a separate species. Large-firm CEOs tend to sit in roughly the top 17% on cognitive ability and the top 5% on a combined measure — impressive, yet shared by tens of thousands of people who never reach the executive suite.

What ultimately separates those who lead from those who do not appears to be a complex mixture of baseline traits, deliberate skill-building, strategic relationship investment, and the kind of fortunate timing that no study can fully model. The research does not say your future is fixed at birth. It says that certain characteristics tend to create favorable conditions — and that those characteristics are more widely distributed than the myth of the born genius would suggest. If you have ever wondered whether your own profile aligns with the traits that research links to leadership success, now is a good time to reflect honestly on your cognitive habits, your resilience under pressure, and the degree to which you take initiative without being asked. Those three dimensions, more than any single talent, appear to be where the science of executive personality profiles is pointing.

What truly defines the character of a great leader — and can science actually measure it? A landmark study tracking approximately 1.3 million individuals from age 18 through their careers suggests the answer is far more nuanced than most people assume. Rather than confirming the romantic idea of a “born genius,” the research reveals that CEOs tend to score higher than average on specific measurable traits — but not by the astronomical margin you might expect. Understanding what those traits actually are, and how much they matter, can reshape how anyone thinks about leadership potential.

This article breaks down the science behind executive personality profiles, explains what cognitive ability and non-cognitive ability really mean for leadership aptitude research, and explores why having the right traits is necessary — but far from sufficient — to reach the top. Whether you are curious about your own potential or simply want to understand the born leader science debate, the findings here offer a grounded, data-driven perspective.

The Character of a Great Leader: What Large-Scale Research Actually Found

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The most important finding from the research is that CEOs score above average on key traits — but they are not in a superhuman category of their own. The study, titled “Are CEOs Born Leaders? Lessons from Traits of a Million Individuals,” was conducted by researchers affiliated with the University of New South Wales, Aalto University, Harvard Business School, and other institutions. It examined approximately 1.3 million Swedish men who underwent standardized military assessments at age 18 — a period when they had minimal professional experience — and then tracked their career outcomes between 2004 and 2010. Around 26,000 of these individuals eventually became CEOs.

The researchers measured 3 core traits at age 18: cognitive ability (thinking and reasoning skills), non-cognitive ability (personality-related traits such as perseverance and emotional stability), and physical height. By assessing these traits before any career development had taken place, the study came as close as possible to measuring baseline, pre-experience potential — making it one of the most credible pieces of leadership aptitude research published to date.

• Cognitive ability: CEOs of large firms scored in approximately the top 17% of the population — notably high, but not in the top 1%.
• Combined traits: When all 3 characteristics were combined, large-firm CEOs ranked in roughly the top 5% — impressive, yet shared by an estimated 60,000 other men in the same dataset.
• Scale of the study: With approximately 9 million person-years of career data observed, the sample size gives the findings exceptional statistical reliability.

The analogy is straightforward: being a fast runner does not automatically put you on the national team. Similarly, scoring in the top 5% on leadership-relevant traits does not guarantee a CEO title. The traits matter, but the story does not end there.

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What Cognitive Ability Actually Measures

Cognitive ability, in the context of this research, refers to the overall capacity to think, reason, and process information — not just raw intelligence or academic grades. The military assessments used in the study evaluated 4 distinct components, each scored on a 9-point scale with an average around 5:

• Logical reasoning: The ability to identify patterns and draw conclusions from structured information.
• Verbal comprehension: Understanding word meanings and language-based reasoning.
• Spatial visualization: Mentally rotating or manipulating objects — useful for planning and engineering thinking.
• Technical understanding: Grasping mechanical and scientific principles.

Think of it as a comprehensive academic aptitude score. The combined result predicted career outcomes, but no single sub-component was decisive on its own. Large-firm CEOs averaged approximately 7.2 on this scale, compared to 6.0 for small-firm CEOs. For context, physicians in the same dataset averaged around 7.5 — meaning large-firm CEOs scored at a level comparable to, though slightly below, medical doctors. This places them in the same intellectual neighborhood as graduates of competitive professional programs, rather than at some unreachable extreme.

Importantly, studies indicate that cognitive ability alone explains only a fraction of who ultimately reaches the top executive level. Many individuals scoring equally high or higher never become CEOs, which means other factors must be doing significant additional work.

How Company Size Amplifies the Trait Gap

How Company Size Amplifies the Trait Gap

Research suggests there is a clear gradient: the larger the firm a CEO leads, the higher their measured traits tend to be. The study categorized firms by asset size, with large firms defined as those with assets above approximately 10 billion Swedish kronor and small firms below roughly 100 million. Across this spectrum, both cognitive and non-cognitive scores rose consistently with firm size. Height followed the same pattern, with large-firm CEOs standing approximately 3 centimeters taller than their small-firm counterparts on average.

• Small-firm CEOs: Cognitive score approximately 6.0; non-cognitive score approximately 6.1.
• Large-firm CEOs: Cognitive score approximately 7.2; non-cognitive score approximately 7.4.
• Difference: Roughly 0.7 standard deviations in cognitive ability — a meaningful but not extreme gap.

The gradient makes intuitive sense: running a larger organization involves greater complexity, more stakeholders, and higher-stakes decisions, which may place a premium on stronger all-round capability. However, the differences between firm sizes are not enormous — they resemble the difference between a very strong student and an exceptionally strong one, rather than the difference between a novice and an expert.

Non-Cognitive Ability: The Most Powerful Predictor in the Executive Personality Profile

What Are Entrepreneur Personality Traits? Who Succeeds?

Of all 3 measured traits, non-cognitive ability showed the strongest statistical relationship with reaching CEO status — with a regression coefficient approximately twice as large as that of cognitive ability. Non-cognitive ability, as defined in this research context, encompasses personality-adjacent qualities assessed through structured interviews at age 18. The evaluators rated recruits on 5 dimensions:

• Sense of responsibility: Taking ownership of tasks and following through on commitments.
• Perseverance: Sustaining effort over time, especially when facing obstacles.
• Emotional stability: Maintaining composure and consistent behavior under pressure.
• Initiative: Proactively identifying and acting on opportunities without being told.
• Social maturity: Navigating group dynamics and interpersonal situations effectively.

In the regression analysis, the coefficient for non-cognitive ability was approximately 0.59, compared to 0.31 for cognitive ability — a roughly 2-to-1 ratio in predictive strength. Height contributed a smaller but still statistically significant coefficient of around 0.12. When researchers calculated the combined weight of all 3 traits, non-cognitive ability accounted for approximately 58% of the composite score, cognitive ability for roughly 31%, and height for about 12%.

Why might personality-related traits outweigh raw thinking power? Leadership roles inherently involve motivating others, navigating ambiguity, and making judgment calls under uncertainty — domains where emotional stability and drive arguably matter more than pure calculation speed. Think of it like a school sports team captain: the highest exam scorer does not always make the best captain. The person who holds the group together under pressure often does.

Does Height Really Matter for CEO Leadership Aptitude?

Research indicates that physical height does have a small but measurable association with reaching senior leadership positions, though its practical importance is modest. In the dataset, the average height of the male population was approximately 179 centimeters, while large-firm CEOs averaged around 183 centimeters — a difference of about 3 centimeters. The researchers estimated that each additional centimeter of height was roughly equivalent in predictive value to approximately 0.9 IQ points.

One plausible explanation is that height influences first impressions and perceived confidence, which may subtly affect how individuals are evaluated during career-defining moments such as promotions or board interviews. However, it is critical to note that height is the weakest of the 3 predictors by a significant margin, and the data certainly do not suggest that tall people are destined to lead or that shorter individuals face an insurmountable disadvantage. It is a contributing thread in a much larger fabric.

Why Having the Character of a Great Leader Is Not Enough on Its Own

Why Work Addiction Happens: 5 Personality & Science Causes

Perhaps the most striking finding of the entire study is that the traits associated with CEO success are shared by a very large number of people — most of whom never become CEOs. When the researchers counted how many individuals in the dataset matched or exceeded the median large-firm CEO on the combined composite score, the number came to approximately 60,000 men. Yet the study identified only a small fraction of that group as large-firm CEOs. More than 100 times as many people with equivalent or superior trait profiles ended up in middle management or smaller leadership roles.

How to Spot the Dark Triad! 3 Types of Bad Actors Explained

This finding has profound implications for how we think about leadership trait theory. The classic version of trait theory — sometimes called the “great man” or born leader science perspective — assumes that exceptional leaders possess exceptional characteristics that set them apart from nearly everyone else. The data complicate that narrative considerably. Being in the top 5% on a composite of cognitive ability, non-cognitive ability, and height is genuinely unusual. But at a national population scale, it still describes tens of thousands of people. The bottleneck is not the supply of qualified individuals; it is the number of top executive positions available.

Psychopath Boss Harms Subordinates Just by Existing! Solutions

Family-Owned Firms and the Narrowing of the Selection Pool

An instructive comparison within the study involves family-owned versus non-family firms, where successor CEOs — those who inherited the role — tended to show measurably lower trait scores. Specifically, family successors scored approximately 0.27 standard deviations lower on cognitive ability compared to externally recruited CEOs leading firms of similar size. This is not a negligible gap.

The most likely explanation is straightforward: when a CEO position is filled by inheritance, the effective candidate pool shrinks from potentially thousands of qualified individuals to whoever happens to be in the family. Restricting the search in this way statistically lowers the probability of selecting someone from the upper range of the trait distribution. This finding serves as an indirect validation of the study’s core premise — if traits genuinely predict CEO performance, then selection processes that ignore traits in favor of family ties should, on average, produce lower-scoring leaders. The data appear to confirm that pattern.

What Explains CEO Compensation If Traits Only Account for About 10%?

What Explains CEO Compensation If Traits Only Account for About 10%?

Another revealing detail from the research concerns pay: large-firm CEOs earned roughly 12 times the average wage, yet the 3 measured traits explained only approximately 10% of that compensation gap. If cognitive ability, personality traits, and height were the dominant drivers of executive success and reward, we would expect these factors to explain a much larger share of the pay premium. The fact that they explain only about 10% suggests that a substantial portion of CEO compensation — and presumably of what it takes to reach the top — is driven by factors the study could not fully capture.

Those unmeasured factors likely include accumulated professional experience, industry-specific knowledge, social networks and mentorship, timing and circumstance, organizational politics, and simple luck. This aligns with what many leadership scholars have argued for decades: raw aptitude sets a floor, but the ceiling is shaped by a complex interplay of context, relationships, and opportunity.

Personality Traits of Workplace Bullies: How to Spot Them

Actionable Insights: What This Research Means for Your Own Leadership Path

Personality Traits That Lead to Resignation: Research Guide

Strengthen Non-Cognitive Traits First — They Matter Most

Because non-cognitive ability accounts for roughly 58% of the composite trait profile associated with CEO status, investing in personality-adjacent skills is likely the highest-leverage activity for anyone with leadership aspirations. Why it works: emotional stability, perseverance, and initiative are trainable to a meaningful degree, unlike some aspects of raw cognitive speed. How to practice: Deliberately seek out roles or projects that place you in high-pressure situations requiring follow-through — project leadership, volunteer coordination, team sports captaincy, or entrepreneurial side projects. Reflect regularly on how you respond to setbacks. Over time, these experiences build the stable, action-oriented disposition the research associates with senior leadership.

Do Not Dismiss Cognitive Development — But Do Not Obsess Over It Either

Cognitive ability still contributes approximately 31% of the CEO trait composite, so intellectual sharpness genuinely matters. Why it works: Leaders of large, complex organizations face information-dense decisions regularly; stronger reasoning ability helps process that complexity faster and more accurately. How to practice: Read broadly across disciplines, engage with quantitative reasoning tasks, practice structured argumentation, and seek feedback on the logical coherence of your plans. However, remember that you do not need to be in the top 1% — reaching a level of solid analytical competence is far more important than chasing genius-level scores.

Treat Opportunity and Network as Multipliers, Not Shortcuts

Since approximately 90% of CEO compensation variance remains unexplained by measured traits alone, external factors — networks, mentors, timing, visibility — carry enormous weight. Why it works: Many people with strong leadership traits never reach top roles simply because they are not visible to the right decision-makers at the right time. How to practice: Actively invest in professional relationships, seek sponsors (not just mentors) who can advocate for you, and position yourself in roles that offer high visibility within your organization. Consistent, reliable performance in these visible roles compounds over time into a track record that opens doors that raw ability alone cannot.

Avoid the “I’m Not Special Enough” Trap

The finding that approximately 60,000 people matched or exceeded the median large-firm CEO’s trait composite should be encouraging, not discouraging. Why it works: Self-limiting beliefs rooted in the myth of the born genius cause many capable people to self-select out of leadership opportunities before they even begin competing. How to practice: When you hesitate to raise your hand for a leadership role, ask yourself whether your hesitation is based on actual capability gaps or on an unfounded belief that leaders are a fundamentally different category of human. The research suggests the latter assumption is largely incorrect.

Frequently Asked Questions

Are leaders born or made, according to scientific research?

Research suggests the answer is “both, but neither exclusively.” Studies indicate that certain traits measured as early as age 18 — including cognitive ability, emotional stability, perseverance, and initiative — are associated with higher rates of reaching senior leadership positions. However, the same research shows that the vast majority of people with those traits never become top executives, implying that experience, environment, opportunity, and circumstance play equally important roles. The born leader science framework is best understood as describing a set of helpful starting conditions, not a predetermined destiny.

What cognitive ability level do CEOs typically have?

Research indicates that CEOs of large firms tend to score in approximately the top 17% of the general population on cognitive ability assessments — well above average, but not in the top 1% that popular culture often implies. When combined with non-cognitive traits and height, large-firm CEOs as a group rank in roughly the top 5% on a composite measure. This places them in a similar intellectual range to physicians and other competitive professionals, rather than in a category of extreme cognitive outliers.

Which personality traits are most associated with becoming a CEO?

Based on large-scale leadership aptitude research, non-cognitive traits — particularly perseverance, emotional stability, initiative, responsibility, and social maturity — tend to be the strongest predictors of reaching CEO status, with approximately twice the statistical weight of cognitive ability in regression analyses. These traits are measured through behavioral indicators rather than standardized tests, and they reflect the kind of resilient, action-oriented, socially intelligent disposition that managing large organizations appears to demand. Cognitive ability also matters significantly, but personality-adjacent qualities seem to be the more decisive differentiator.

Can someone become a CEO without being exceptionally intelligent?

Studies indicate that reaching CEO level does not require top-1% intelligence. Large-firm CEOs in major research samples score in approximately the top 17% on cognitive assessments — meaningfully above average, but a level attainable by a substantial portion of the population. Importantly, non-cognitive traits such as perseverance and emotional stability appear to predict CEO attainment more strongly than raw cognitive scores. This suggests that someone with solid but not extraordinary intellectual ability, combined with strong personality traits and strategic career positioning, has a realistic pathway to executive leadership.

Why do so many capable people never become CEOs despite having the right traits?

Research suggests this is primarily a structural supply-and-demand problem rather than a failure of individual potential. Studies indicate that approximately 60,000 individuals in a national sample of 1.3 million matched or exceeded the median large-firm CEO on a composite of measured traits — yet only a tiny fraction of them held large-firm CEO positions. The number of top executive roles is simply far smaller than the pool of qualified candidates. Factors such as professional visibility, network access, organizational timing, and chance encounters with sponsors or opportunities appear to play a substantial role in determining who among the qualified pool ultimately reaches the top.

Do family-business CEOs differ in traits from externally hired CEOs?

Research indicates they tend to, yes. Studies suggest that CEOs who inherit a family business role score approximately 0.27 standard deviations lower on cognitive ability compared to externally recruited CEOs of similarly sized firms. The likely explanation is a narrower selection pool: when candidates are drawn exclusively from within a family rather than from the open market, the statistical probability of identifying someone in the upper range of the trait distribution decreases significantly. This finding indirectly supports the idea that broader, merit-based selection processes tend to surface higher-scoring candidates more reliably.

How much does height actually matter for executive leadership?

Height has a small but statistically detectable association with reaching CEO status. Research estimates that each additional centimeter of height is roughly equivalent in predictive value to approximately 0.9 IQ points in cognitive ability terms. Large-firm CEOs tend to average about 3 centimeters taller than the general male population in relevant datasets. However, height is the weakest of the 3 measured predictors, accounting for only approximately 12% of the composite trait score associated with CEO attainment. It may influence first impressions or projected confidence, but it is by no means a determining factor in leadership success.

Summary: What the Science of Leadership Traits Really Tells Us

The evidence from one of the largest leadership studies ever conducted paints a picture that is both humbling and genuinely encouraging. The character of a great leader does involve measurably stronger cognitive ability, more robust non-cognitive traits like perseverance and emotional stability, and even a modest physical edge — but the differences are degrees of the same human qualities, not a separate species. Large-firm CEOs tend to sit in roughly the top 17% on cognitive ability and the top 5% on a combined measure — impressive, yet shared by tens of thousands of people who never reach the executive suite.

What ultimately separates those who lead from those who do not appears to be a complex mixture of baseline traits, deliberate skill-building, strategic relationship investment, and the kind of fortunate timing that no study can fully model. The research does not say your future is fixed at birth. It says that certain characteristics tend to create favorable conditions — and that those characteristics are more widely distributed than the myth of the born genius would suggest. If you have ever wondered whether your own profile aligns with the traits that research links to leadership success, now is a good time to reflect honestly on your cognitive habits, your resilience under pressure, and the degree to which you take initiative without being asked. Those three dimensions, more than any single talent, appear to be where the science of executive personality profiles is pointing.