What It Means to Be an Intellectual Person: A Deep Dive into Cognitive Traits

At the core of the intellectual profile is “g,” or the general intelligence factor. A landmark study by Clearer Thinking suggests that while IQ is often dismissed as a narrow metric, it actually correlates with a “positive manifold” of performance across nearly all cognitive tasks, from math to vocabulary [1].

However, intellectualism is rarely static. It is divided into two types of intelligence:

• Fluid Intelligence: The ability to solve new problems and identify patterns in novel situations. This typically peaks in early adulthood and declines with age [1].

• Crystallized Intelligence: The accumulation of knowledge, facts, and skills acquired through education and experience. This remains stable or even increases through late adulthood [4].

Intellectuals effectively leverage crystallized intelligence to compensate for natural declines in fluid processing speed. For more on this balance, see our guide on Aging and Intelligence: How to Maintain Cognitive Health.

Raw brain power is the engine, but personality is the steering wheel. Research published in the Psychological Bulletin confirms that “Openness to Experience” is the Big Five personality trait most strongly correlated with intelligence [3].

Within this domain, certain “facets” are more indicative of internal intellectualism than others:

1. Intellectual Engagement: A natural curiosity and the tendency to enjoy complex riddles or difficult puzzles [1].

2. Aesthetics and Feelings: Interestingly, intellectuals often score higher on the appreciation of art and emotional depth, particularly as these correlate with crystallized intelligence [3].

3. Unconventionality: Intellectuals often display a lower tendency toward “orderliness” and traditional social norms, preferring to question established systems rather than follow them blindly [3].

One of the most critical traits of an intellectual person is the capacity for Actively Open-Minded Thinking (AOT). This is a cognitive style characterized by the willingness to search for evidence that contradicts one’s own beliefs.

Unlike raw IQ, which can sometimes be used to better “rationalize” existing biases, AOT allows a person to detach their ego from their ideas. High-IQ individuals who lack AOT may fall into “myside bias,” where they use their intelligence solely to defend their current position rather than to find the truth [1].

While being “intellectual” is often equated with professional success, the correlations are surprisingly nuanced [5]:

• Income: There is a positive but relatively small correlation (around r=0.1 to 0.15) between IQ and income [1].

• Happiness: Intellectualism does not guarantee a higher “happiness” score. In some cases, there is little to no correlation between IQ and life satisfaction [1].

• Social Tolerance: Higher cognitive ability is strongly linked to social progressivism and political tolerance—the ability to tolerate groups one politically opposes [1].

In the professional world, individual intellect is increasingly augmented by Collective Intelligence, where diverse cognitive traits are combined to solve problems that no single intellectual could tackle alone.

Intellectualism is a multidimensional construct involving high cognitive stability, a personality geared toward exploration, and a specific set of thinking habits. It is less about being “right” and more about the process of inquiry.

Your Intellectual Growth Action Plan

1. Prioritize Newness: To maintain fluid intelligence, engage in “novel” cognitive tasks—learn a new language or a complex skill rather than repeating things you are already good at.
2. Practice AOT: Whenever you feel a strong emotional reaction to an argument, stop and intentionally look for three reasons why the opposing view might be correct.
3. Read Broadly: Intellectuals often have high crystallized intelligence because they were read to as children or maintained a reading habit into adulthood [1].
4. Audit Your Openness: Lean into the “Intellect” facet of your personality by seeking out unconventional ideas and challenging your own preference for order.

Being an intellectual is not a destination but a method of interacting with the world. By focusing on active open-mindedness and continuous learning, anyone can cultivate the cognitive traits associated with a high-functioning mind.