Short men are indirectly aggressive toward taller men, study finds

The study shows when the 'Napoleon complex' is most likely to emerge.

  • A recent study examined the Napoleon complex through economic games.
  • The results showed that shorter men are more likely than taller men to keep a disproportionate amount of resources for themselves, but only when the other player can't retaliate.
  • The study suggests that the Napoleon complex is most likely to manifest in situations where the shorter man has all the power.

In the early 19th century, Napoléon Bonaparte was perhaps best known for leading successful military campaigns and serving as the Emperor of the French for nearly a decade. But today, the ruthless French leader is probably best remembered in the popular imagination for his short height, a trait that inspired what many now call the Napoleon complex.

The Napoleon complex is a popular belief that describes an inferiority complex in which short men tend to compensate for their small stature through behavior, such as increased aggression or gossiping. From an evolutionary perspective, it makes sense that short men might try to compensate; research shows that tall men are more likely to hold positions of power, attract mates and be perceived as higher status by their peers.

A new study published in the journal Psychological Science uses economic games to examine the Napoleon complex, providing some of the first results on the importance of height in competition between men.

In an economic experiment called the dictator game, participants were asked to divide a sum of money between themselves and an unseen opponent. Each participant could divvy up the money however he wished. Interestingly, the participants who tended to keep the most money for themselves in this version of the game weren't necessarily shorter—they were people who reported that they often felt small.

The researchers then conducted the same game in a competitive setting, in which two male opponents met face to face, had their heights recorded and read aloud (along with other physical and strength measurements), and were asked to enter separate cubicles. Again, the participants had to divide a sum of money. The allocator could choose to give any amount, or nothing, to his opponent, who was the receiver. The researchers told the participants that one person would play the allocator and the other would play the receiver, but in reality every participant played the allocator.

The results showed that, on average, relatively shorter men kept more money for themselves.

Next, the participants played an ultimatum game in which an allocator divides a sum of money, keeping some of it and offering a portion of his choice to the receiver. But if the receiver perceives the offer to be unfair, he can reject it and both parties get nothing.

Unlike the dictator game, height didn't seem to play a significant role in influencing how much money participants chose to keep in the ultimatum game.

In another experiment, two male opponents once again played a dictator game. This time, however, each participant also had to choose an amount of hot sauce their opponent would have to consume, which was, in theory, a measure of aggression. But the results showed that shorter men were not significantly more likely to make their opponents eat more hot sauce.

Men show flexible behavior in competitions

The study suggests that shorter men are more likely to show indirect, rather than direct, aggression toward taller men in competitions for resources. For shorter men, the researchers wrote that these indirect strategies represent safer options than physical combat. Also, the results suggest that the Napoleon complex is most likely to manifest in situations where the shorter man has all the power, and the taller man can't retaliate.

"The results imply that participant height is most important in predicting competitive behaviors in an absolute-power situation (the dictator game), regardless of opponent height," the researchers wrote. "This is not surprising as shorter and taller men likely have different life experiences that may influence their decision making in behavioral experiments."

It's not just competitions between men that bring out the Napoleon complex, the researchers noted.

"In terms of underlying mechanisms, the Napoleon complex may also be shaped by intersexual selection forces—shorter men could use behavioral strategies to impress females, such as risk taking, generosity, or showing commitment (e.g., Griskevicius et al., 2007; Iredale, Van Vugt, & Dunbar, 2008)."

The researchers suggested it'd be interesting to see whether men would behave differently in these kinds of economic games if an attractive female were also involved.

"For further studies, it would be of great interest to add a potential mating opportunity to the paradigm to see how intersexual competition affects the Napoleon complex. The presence of an attractive female could exacerbate other kinds of overcompensating behaviors in short men—for example, an increased propensity toward risk taking to impress women."

The study, "The Napoleon Complex: When Shorter Men Take More", was authored by Jill E. P. Knapen, Nancy M. Blaker, and Mark Van Vugt.

Stand up against religious discrimination – even if it’s not your religion

As religious diversity increases in the United States, we must learn to channel religious identity into interfaith cooperation.

Sponsored by Charles Koch Foundation
  • Religious diversity is the norm in American life, and that diversity is only increasing, says Eboo Patel.
  • Using the most painful moment of his life as a lesson, Eboo Patel explains why it's crucial to be positive and proactive about engaging religious identity towards interfaith cooperation.
  • The opinions expressed in this video do not necessarily reflect the views of the Charles Koch Foundation, which encourages the expression of diverse viewpoints within a culture of civil discourse and mutual respect.
Keep reading Show less

Moon landing astronauts reveal they possibly infected Earth with space germs

Two Apollo 11 astronauts question NASA's planetary safety procedures.

Credit: Bettmann, Getty Images.
Surprising Science
  • Buzz Aldrin and Michael Collins revealed that there were deficiencies in NASA's safety procedures following the Apollo 11 mission.
  • Moon landing astronauts were quarantined for 21 days.
  • Earth could be contaminated with lunar bacteria.
Keep reading Show less

NASA's idea for making food from thin air just became a reality — it could feed billions

Here's why you might eat greenhouse gases in the future.

Jordane Mathieu on Unsplash
Technology & Innovation
  • The company's protein powder, "Solein," is similar in form and taste to wheat flour.
  • Based on a concept developed by NASA, the product has wide potential as a carbon-neutral source of protein.
  • The man-made "meat" industry just got even more interesting.
Keep reading Show less

Where the evidence of fake news is really hiding

When it comes to sniffing out whether a source is credible or not, even journalists can sometimes take the wrong approach.

Sponsored by Charles Koch Foundation
  • We all think that we're competent consumers of news media, but the research shows that even journalists struggle with identifying fact from fiction.
  • When judging whether a piece of media is true or not, most of us focus too much on the source itself. Knowledge has a context, and it's important to look at that context when trying to validate a source.
  • The opinions expressed in this video do not necessarily reflect the views of the Charles Koch Foundation, which encourages the expression of diverse viewpoints within a culture of civil discourse and mutual respect.
Keep reading Show less