Pop culture may have fooled us into believing that smartness or intelligence comes in a fast, sharp and suave package. Here are three insights to broaden that perspective.
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People often picture intelligence as mental efficiency. We tend to imagine a smart person as someone who responds quickly, has strong opinions and sees things clearly. However, highly intelligent people are not always faster, calmer or more decisive. Sometimes, their minds are busier, slower and more conflicted.
In my work as a psychologist, I’ve noticed that people with higher cognitive ability are often misunderstood simply because their mental habits don’t always look the way we expect intelligence to look. These tendencies get labeled as overthinking, indecision or hesitation, when, in reality, they reflect deeper cognitive processing.
Here are three thinking patterns that often appear “odd” on the surface, yet are consistently linked, under the right conditions, to higher intelligence.
1. Smart People Mentally Replay Conversations And Think Of Future Scenarios
People often think that replaying conversations in their minds or constantly envisioning different future conversations is a symptom of anxiety or rumination. And, of course, it can be. But what’s also been shown is that mentally replaying conversations is also a function of advanced mental simulation.
Studies show that people with high fluid intelligence can process multiple “what if” scenarios concurrently, helping them see ahead and identify concealed dangers and then plan their actions in advance.
This mode of thinking requires a lot of working memory because the brain isn’t looping idly; it’s stress-testing every single possibility that comes to mind. This might be the reason why these people seem to be frequently lost in their thoughts, even when they’re alone. Their brains are processing social interactions and the implications of every possible choice they have to make.
It’s important, however, to distinguish this process from maladaptive rumination. While rumination is repetitive and emotionally sticky, mental simulation is flexible and exploratory. It shifts perspective, updates assumptions and often leads to insight. People often conflate the two because, from the outside, both include silence, distraction, or apparent overthinking.
However, it does come with some cost. This kind of “over-processing” can exude an air of indecisiveness, especially in situations where reaction time matters. However, in terms of cognition, this pattern indicates a mind that is preparing rather than stalling.
2. Smart People Are Comfortable Holding Two Conflicting Ideas When They Think
Most people feel dissonant toward contradictory beliefs because they look at them as problems to be solved. We find ways to simplify or justify it, and are often eager to take a side. However, highly intelligent people are often able to live with this discomfort for a longer time.
People with higher cognitive ability are better able to simultaneously evaluate multiple valid perspectives, even if they conflict with each other. They do not jump to resolutions but, instead, allow the competing perspectives to co-exist while the individual weighs the evidence for an often indefinite period of time.
This may seem confusing to onlookers. A person who argues, “I see merit on both sides,” can be perceived as being evasive. However, the same tendency can also be seen as a demonstration of cognitive flexibility, which involves the ability to withstand a need for closure and remain amenable to revision.
A 2023 study found that those who have high IQs display a low need for cognitive closure and also tend to be more tolerant of ambiguity. These people do not find ambiguity threatening because their conceptual structures can handle complexity.
Of course, this comes with social costs. In fast-moving discussions or polarized environments, nuance is often mistaken for weakness. But from a psychological perspective, the ability to hold contradiction without collapsing is a hallmark of sophisticated thinking. It allows for better judgment, deeper understanding and more accurate belief updating over time.
3. Smart People Take Longer to Answer, Even When They Know The Material Well
Speed is frequently treated as a proxy for intelligence, and so, quick thinkers are assumed to be smart thinkers. Yet cognitive science consistently shows that one of the defining features of higher intelligence is not speed, but control.
Dual-process theories of cognition distinguish between fast, intuitive thinking and slower, analytical thinking. While everyone uses both systems, more intelligent individuals are better at inhibiting automatic responses when they sense that those responses may be misleading.
(Take my science-inspired System 2 Thinking Test to know if you’re more analytic than the average person.)
A study published in 2022 found that higher intelligence predicts a greater tendency to pause, override intuition and engage in deliberate reasoning, especially when problems are complex or counterintuitive. In other words, intelligent individuals are often slower precisely because they are monitoring their own thinking.
That pause can be misread. In classrooms, meetings or interviews, hesitation is sometimes interpreted as uncertainty or lack of knowledge. But, in many cases, it reflects a recognition that the first answer is not always the best one.
Higher intelligence is related to stronger error monitoring abilities. Such people are more vigilant about potential errors, so they tend to pace themselves when accuracy is more important. However, the drawback is that this measured approach would not always be suited to environments where speed is rewarded. But from a cognitive standpoint, being able to inhibit premature responses is a strength. It is a reflection of a mind that values accuracy and meaning more than speed.
In reality, intelligence is not always smooth. These “odd” patterns of thinking are not always an asset to all situations. Nor are these patterns always associated with high intelligence. As a person’s intelligence increases, their brain’s abilities for simulation, uncertainty and internally controlling impulses also grow. What seems inefficient from the outside appears so from a functional standpoint.
It is important to understand this distinction, not to glorify intelligence, but to understand the implications that there may be some mental processes with which we may be trying to intervene too quickly for our own best interests, the very processes our brains are designed to do.
A rumination habit can be productive or damaging depending on its severity. Take the research-informed Perseverative Thinking Questionnaire to know where you stand.
Are you smarter and more analytic than the average person? Take my science-inspired System 2 Thinking Test to find out.
