In the early 1930s, a psychologist named Winthrop Kellogg and his wife carried out a bizarre experiment.
They raised their ten-month-old son, Donald, alongside a young chimpanzee named Gua. The idea was to see if the chimp would begin acting more like a human if she grew up in a human environment.
The opposite happened.
The chimp never picked up human speech. But the baby started imitating the chimp. Donald copied her grunts, gestures and sounds. His development began to regress to the point where the experiment had to be shut down after nine months.
That story has stayed with me for years. Not because I care much about chimps, but because it says something profound about people, performance and culture.
Why Bad Drives Out Good
Most leaders believe that if you put a few high performers into a team, their habits will rub off on everyone else. That excellence will spread like perfume.
But real life often works the other way. Low standards spread faster than high ones. Just like Donald picked up the chimp’s grunts instead of the chimp picking up Donald’s words, mediocrity is contagious.
In teams, people tend to adapt downward. They watch what others get away with. They notice how much effort is “normal.” And slowly, they adjust their own behavior. Nobody wants to be the sucker who works twice as hard while others cruise. Over time, the baseline becomes the ceiling.
This isn’t just about individuals. It is about culture. The unwritten rules of what gets rewarded, what gets tolerated and what gets ignored shape how people act far more than motivational speeches or corporate posters.
And what you allow is what you get.
Cultures That Worship Harmony
You see this very clearly in cultures that worship harmony above all else.
Think of many workplaces in Asia or the Middle East, where avoiding conflict is prized more than speaking the truth. Or in family-driven companies where being liked matters more than being effective.
In these settings, calling out poor performance or bad behavior is seen as “rocking the boat.” The low performer stays. Others quietly lower their standards. Soon the norm is mediocrity.
I have coached executives in the UAE who are stuck in these cultures. They know the work is below par. They know politics trumps merit. But they adapt because the cost of confronting it feels too high. So they shrug and play along.
This is exactly what happened in the Kellogg household. The baby didn’t pull the chimp up. He was pulled down because that was the easier, safer path.
Lessons From Genesis
When I co-founded Genesis Institute, a financial training company in Dubai, this lesson hit me in the gut.
We were a small firm selling a premium service-CFA exam prep. Our entire brand rested on giving clients a world-class experience in every classroom. That meant high energy, deep knowledge and flawless delivery.
We couldn’t afford mediocrity. One trainer with the wrong attitude or sloppy preparation could damage the reputation we had spent years building. Worse, if left unchecked, that behavior could spread. Others would see it as acceptable. Standards would slip. Clients would notice. The market would know.
So I made tough calls. I fired people who didn’t have the right attitude or aptitude. Not because they were terrible people. Not because I enjoyed playing the villain. But because in a small, service-oriented business, the cost of tolerating mediocrity is lethal.
I learned that one weak link can become a virus. In a large corporation, maybe you can bury poor performance under layers of bureaucracy. In a small firm, it shows up instantly in client feedback and in the energy of the team.
Leaders who want to build strong cultures must be ruthless about protecting standards. Not ruthless in the sense of cruelty. Ruthless in clarity. Ruthless in acting fast before mediocrity becomes the default setting.
Why Tolerating Average Is So Dangerous
Here’s why mediocrity spreads so easily:
- It is easier. High standards take effort. Mediocrity asks less of you. So given the option, people often take the easier path.
- It feels safer. Sticking out can make you a target. In a culture that tolerates average, people fear being the overachiever more than being the slacker.
- It looks normal. Humans are social animals. We adapt to what the group does, even if that standard is poor.
That’s why the Donald and Gua story matters. It shows how powerful environment is. Even a human child, born with the wiring for speech, was pulled down by the chimp’s grunts.
Now imagine what happens in a workplace where the “chimp grunts” are laziness, excuses, or cutting corners. Unless leaders intervene, the whole team begins to sound and act the same way.
Leadership Is About Protecting the Standard
The role of a leader is not to be popular. It is to protect the standard.
This means:
- Confronting poor behavior quickly, even if it creates tension.
- Making it clear what is acceptable and what is not.
- Rewarding excellence publicly, not just quietly.
- Firing people when needed, not as a last resort but as a sign that the culture matters.
I have seen leaders tolerate mediocrity because they are afraid of confrontation. They tell themselves that harmony is worth it. They convince themselves that “people will improve eventually.” But what actually happens is that the average becomes the new normal.
The best leaders understand that standards don’t drift upward by accident. They drift downward unless actively defended.
The playbook
So how do you build a culture where people rise instead of sink? A few things help:
- Hire with obsession. Skills matter, but attitude matters more. Look for people who set high standards for themselves.
- Set the tone early. The first few weeks shape how people see “normal.” Make sure the normal they see is excellence.
- Celebrate the right behaviors. Not just the big wins, but the small acts of discipline and quality.
- Remove toxicity fast. Don’t wait for proof beyond doubt. If someone consistently lowers the bar, act.
- Lead by example. Nothing kills a culture faster than leaders who preach one thing and do another.
Culture is not what you write on the wall. Culture is what you tolerate in the hall.
The Hard Truth
The Kellogg experiment was strange and short-lived. But its lesson is timeless. Left to chance, people don’t usually rise to their best. They fall to what is normal around them.
In life and in work, mediocrity is easier to catch than excellence.
If you are a leader, this is your burden and your opportunity. Protect the standard. Defend it daily. Because what you allow is what you get.
And in the long run, your culture is not shaped by what you say but by what you tolerate.