This content has been automatically translated from Ukrainian.
Almost every person has encountered a situation at least once in their life when someone confidently explains a complex topic, but is obviously mistaken. Sometimes it looks funny, sometimes it’s annoying, and at times it even becomes dangerous. This phenomenon in psychology is called the Dunning-Kruger effect.
This cognitive phenomenon describes a situation where people with a low level of knowledge or skills in a particular area tend to overestimate their own competence. Simply put: the less a person knows, the easier it may seem to them that they have already understood everything.
At the same time, the paradox is that truly experienced individuals often doubt themselves much more.
How the Dunning-Kruger Effect Arose
The name of the phenomenon comes from the surnames of American psychologists David Dunning and Justin Kruger. In the late 1990s, they conducted a series of studies dedicated to the self-assessment of human knowledge.
The idea for the research was born after a strange criminal case. One man robbed a bank without a mask, convinced that lemon juice would make his face "invisible" to cameras. This absurd confidence intrigued the scientists: how can people be so convinced about blatantly wrong things?
In their experiments, Dunning and Kruger tested participants' skills in logic, grammar, and humor. The results were very revealing: people with the worst results consistently rated their abilities much higher than they actually were.
The reason turned out to be quite simple. To understand that you are mistaken, you need to have a certain level of knowledge. And if knowledge is lacking, a person often doesn’t even notice their own mistakes.
Why Beginners Often Think Everything is Simple
The Dunning-Kruger effect is particularly noticeable at the beginning of learning any topic. When a person learns the first basic things, they may feel that they have already understood the entire system.
For example, someone has read a few articles about investments — and already considers themselves a financial expert. Another has watched a few videos about medicine — and starts arguing with doctors. Or a person has learned a few phrases in a foreign language and feels that they "almost master" it.
The problem is that initial knowledge often creates an illusion of simplicity. A person does not yet see the full depth of the topic, the complex exceptions, contradictions, and nuances. The world seems much simpler than it actually is.
Interestingly, with true deepening of knowledge, confidence often sharply declines. A person begins to realize how much more they do not know.
Why Experts Sometimes Seem Less Confident
One of the most interesting traits of the Dunning-Kruger effect is that competent people often sound less categorical than beginners.
Experienced specialists usually have a good understanding of the complexity of their field. They know how many exceptions, uncertainties, and situations exist where there is simply no definitive answer.
That’s why true experts more often say:
- “it depends on the situation”;
- “the data is still ambiguous”;
- “there are different viewpoints”;
- “more information is needed”.
A beginner may perceive such caution as a sign of weakness or insecurity. But in reality, it is often a sign of a deeper understanding of the topic.
The Dunning-Kruger Effect on the Internet
The internet and social media have made this phenomenon particularly noticeable. Today, a person can read several posts or watch short videos in one evening — and already feel like an expert on a complex topic.
Social media algorithms also exacerbate the problem. Confident, categorical, and emotional statements usually attract more attention than cautious and complex explanations. Because of this, people who speak with maximum confidence often appear more convincing — even if they are mistaken.
This is especially evident in topics of medicine, politics, psychology, nutrition, or finance. The more complex the topic, the easier it is to create the illusion of “simple explanations for everything.”
The popularity of the Dunning-Kruger effect has led to it being mentioned literally everywhere. Sometimes even as a way to simply mock someone else's opinion.
However, psychologists emphasize: this phenomenon does not mean that all people are "foolish" or that only beginners make mistakes. In fact, every person can fall under the influence of this effect in areas where they lack knowledge.
Moreover, modern research shows that the situation is more complex than it is often described on the internet. Self-assessment depends on many factors: culture, character, education, social environment, and even the specific situation.
Thus, the Dunning-Kruger effect is not a universal law, but rather a psychological tendency.
