Every time you decide who to ask for advice, who to collaborate with, who to listen to attentively, or even who to trust, you are (unconsciously) evaluating the intelligence of others. In fact, the ability to recognize an intelligent person is not exactly trivial.
Having that finely tuned radar will allow you to identify who thinks well, who learns and adapts quickly, and who has their own judgment or can solve problems more effectively. In the long run, this will influence the relationships you choose to build and, obviously, the environment you create around you.
The 3 characteristics of people who know how to recognize intelligence
Intelligence is the ability to adapt to the environment, solve problems, learn from experience, reason, make effective decisions, and, in many cases, understand both the world and oneself. This means it includes classic cognitive skills such as logic and language, but also other dimensions related to emotional intelligence, mental flexibility, creativity, and the ability to anticipate consequences.
On average, we can recognize an intelligent person even in a brief encounter, but there’s a significant difference in our level of accuracy. Some people can judge others’ intelligence quite accurately, while others aren’t as good.
Researchers at Herdecke University analyzed individual differences in the ability to judge intelligence. They asked participants to watch 50 one-minute videos and rate the intelligence of the people in them. The participants performed tasks such as reading a weather report aloud, describing a recent pleasant experience, explaining the meaning of the term symmetry, or participating in a short role-playing game.
Obviously, the actual intelligence of the people appearing in the videos was also assessed, as well as that of the participants, including tests to measure their level of empathy, emotional perception, personality traits, and subjective well-being. They discovered that some people were very good “judges” of intelligence, and that these individuals shared certain characteristics:
1. Higher level of intelligence
In other words, the most intelligent people were also much more accurate at assessing the intelligence of others. It’s not just about recognizing someone similar, but about a more subtle ability to analyze how another person reasons and how they structure and express their ideas. In a way, it’s as if they had a more precisely calibrated “radar” for identifying intelligence.
2. Improved emotional perception skills
Another key factor is the ability to read others on an emotional level. Highly sensitive people not only pick up on moods but also on the nuances in communication: doubt, genuine confidence, true curiosity, or mental rigidity. This allows them to look beyond the surface to identify more subtle signs of intelligence, such as openness to learning or cognitive flexibility. In practice, this means they listen not only to what the other person says but also to how they say it.
3. Greater life satisfaction
Perhaps the most striking finding is that people who were more satisfied with their lives were also more accurate in assessing the intelligence of others. This might seem surprising at first glance, but it makes sense because when a person is more emotionally balanced, they tend to judge with fewer defensive biases (such as envy, a sense of threat, or the need to constantly compare themselves). This allows them to observe more objectively. Conversely, when we are dissatisfied or insecure, our perception is more likely to be distorted, and we are more likely to underestimate or overestimate others. This means that feeling satisfied not only improves how you feel, but also influences how you perceive others.
It’s not a matter of intuition or identification, but of sharpening your gaze
Ultimately, identifying intelligence in others isn’t so much a matter of having a “good eye” as it is of looking more closely. It involves going beyond the obvious, beyond what sounds good or what makes an impression, to pay attention to deeper signals that reveal how someone reasons, how they change their mind when presented with new information, or how they manage uncertainty.
Therefore, perhaps the question isn’t so much “Who is intelligent?” but rather: “Are we creating the conditions to clearly perceive the signs of intelligence?” When we refine our perception, we are better able to choose who to listen to and who to trust. But this is only achieved when we cultivate a more curious attitude, while also being more open and balanced.
Source:
Heine, C. et. Al. (2026) The good judge of intelligence. Intelligence; 115: 101994.
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