High IQ Personality Traits: Are You High IQ? Meta-Analysis Study

High IQ personality traits – did you know they exist?

Our personality may be related to intelligence quotient (IQ).

IQ is one indicator that represents the level of intellectual ability.

For example, people with high IQ are said to be good at quickly solving complex problems and understanding abstract concepts.

But does high IQ simply mean being smart? Actually, there seems to be an interesting relationship between IQ and personality.

An American research team published a paper titled “Personality and intelligence: A meta-analysis“. This paper is a large-scale meta-analysis study that analyzed data from 272 studies involving over 160,000 people.

The results showed that several personality traits are associated with IQ.

Additionally, the research revealed that focusing on more detailed aspects of personality made the relationship with IQ even clearer.

Let me introduce the specifics.

Once again, personality researcher and author of Villain Encyclopedia, Tokiwa (@etokiwa999), will provide the explanation.
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Large-Scale Meta-Analysis Exploring High IQ Personality Traits

Analysis of 272 Samples and Over 160,000 People Using Four Major Personality Tests

This large-scale meta-analysis analyzed data from 272 samples and over 160,000 people using four major personality tests.
The personality tests examined were as follows:

• NEO
• BFAS
• BFI-2
• HEXACO

These personality tests are widely used to measure basic personality traits such as the Big Five (Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism) and HEXACO (Honesty-Humility, Emotionality, Extraversion, Agreeableness, Conscientiousness, Openness).

In other words, by using these tests, it’s possible to comprehensively capture the major aspects of personality.

This meta-analysis can be considered highly significant for examining the relationship between personality and intelligence using such large-scale data.

What is HEXACO? Overview, Genetics, Diagnosis & MBTI Relations

Examining Correlations with Intelligence IQ at Broad Factor, Facet, and Item Levels

This study examined the correlation between personality and intelligence IQ in detail at the broad factor, facet, and item levels.

Broad factors refer to the major dimensions of personality (e.g., the five dimensions of the Big Five).

On the other hand, facets represent aspects of personality that further subdivide the broad factors.

And the item level refers to individual question items used in personality tests.

By examining the relationship between personality and intelligence at these different levels, more detailed and complex associations were revealed.

In other words, “high IQ personality traits” vary depending on which aspect of personality we focus on.

The methodology of this study can be considered an important step toward a deeper understanding of the relationship between personality and intelligence.

What Is IQ? 5 Ways Intelligence Affects Income, Health & Life

High IQ Personality is Openness, Neuroticism Shows Weak Negative Correlation

Looking at the relationship between broad personality factors and intelligence IQ, Openness showed the strongest positive correlation with IQ.

This means that people with strong intellectual curiosity who are open to new ideas tend to have higher intelligence IQ.

In contrast, Neuroticism showed a weak negative correlation with intelligence IQ.

People high in Neuroticism tend to be prone to anxiety and stress.

In other words, emotionally unstable people tend to have somewhat lower intelligence IQ.

The other broad factors – Extraversion, Agreeableness, and Conscientiousness – showed almost no correlation with intelligence IQ.

“High IQ personality traits” appear to be limited to specific personality characteristics.

Broad Factors of High IQ Personality Traits

Openness Shows the Strongest Positive Correlation with Intelligence IQ

Among the broad personality factors, Openness showed a positive correlation with intelligence IQ.
Openness tends to be high in people with the following characteristics:

• Strong intellectual curiosity
• Interest in new ideas
• Rich imagination
• Aesthetic sense

People with these characteristics have a strong tendency to seek intellectual stimulation, which may result in higher intelligence IQ. This is exactly what “high IQ personality traits” refers to.

While many factors beyond personality are thought to influence intelligence, openness will be an important clue in understanding “high IQ personality traits.”

※Personality can be measured using this HEXACO personality test!

What is Openness? Big Five, MBTI N vs S Connections

Low IQ Personality: Neuroticism Shows Weak Negative Correlation with Intelligence IQ

Neuroticism showed a weak negative correlation with intelligence IQ.
People high in this tendency have the following characteristics:

• Prone to anxiety
• Easily stressed
• Severe mood swings
• Tendency to worry

People with these characteristics may find it difficult to demonstrate intellectual performance.

However, the correlation coefficient is r=-.09, which is very small and almost negligible.

In other words, high neuroticism appears to have little effect on intelligence IQ.

As factors explaining individual differences in intelligence IQ, other factors may be more important than neuroticism.

However, when neuroticism is extremely high, it may have some impact on intellectual performance.

What is Emotionality? HEXACO & MBTI Connections Explained

Extraversion, Agreeableness, and Conscientiousness Show Almost No Correlation with Intelligence IQ

Extraversion, agreeableness, and conscientiousness showed almost no correlation with intelligence IQ.
In other words, high levels of these personality traits appear to have little relationship with high intelligence.
For example, people high in extraversion have the following characteristics:

• Sociable
• Assertive
• Active
• Seeking stimulation

However, these characteristics may not have a direct relationship with intellectual ability.

Similarly, people high in agreeableness can build good relationships with others, but this does not directly translate to high intelligence.

Regarding conscientiousness, being diligent and responsible does not seem to guarantee high intelligence.

These results suggest that while personality and intelligence are not completely independent concepts, they are not closely related either.

To understand the relationship between personality and intelligence, more detailed analysis would be necessary.

Sub-factors of High IQ Personality

Intellectual Curiosity and Unconventionality Show Strong Correlation with Intelligence IQ

Looking at the relationship between personality sub-factors and intelligence IQ, we found that intellectual curiosity and unconventionality have strong correlations with intelligence IQ.
These traits manifest as the following behaviors:

• Exploring new ideas
• Preferring to tackle complex problems
• Thinking in ways unconstrained by convention
• Demonstrating creativity

People with such characteristics may have a strong attitude of seeking intellectual stimulation and learning on their own.

As a result, they may acquire knowledge and skills, thereby improving their intelligence IQ.

Conversely, people with low intellectual curiosity who prefer traditional ways of thinking tend to have somewhat lower intelligence IQ.

However, these associations do not indicate causation.

Whether high intelligence IQ leads to high intellectual curiosity, or high intellectual curiosity leads to high intelligence IQ, requires further research.

In any case, intellectual curiosity and unconventionality will be important clues in exploring “high IQ personality.”

Sociability and Order-seeking Show Negative Correlation with Intelligence IQ

On the other hand, we found that sociability and order-seeking have negative correlations with intelligence IQ.
People high in sociability have the following characteristics:

• Prefer interacting with others
• Enjoy social events like parties
• Have many friends and acquaintances
• Like to keep in touch with people

Also, people high in order-seeking have the following characteristics:

• Make plans and proceed with things systematically
• Focus on organization and tidiness
• Live a regular lifestyle
• Try to proceed with things according to schedule

These characteristics may have aspects that somewhat contradict intellectual curiosity.

People who value social activities and orderly living may have fewer opportunities to devote time to intellectual activities.

However, the following meta-analysis of gifted children (high IQ children) showed little correlation.

Gifted Children’s Personality Traits: 5 Key Findings

Among extraversion subfactors, sociability and thrill-seeking showed negative correlation with crystallized intelligence

Among the subfactors of extraversion, sociability and thrill-seeking showed negative correlations with crystallized intelligence.
Crystallized intelligence refers to knowledge and skills acquired through learning and experience.
On the other hand, people high in sociability tend to value communication with others and prefer social activities.
Additionally, people high in thrill-seeking can be said to have a strong tendency to seek novel experiences and excitement.
These characteristics may manifest as the following behaviors.

• Attending parties and social events
• Frequently staying in touch with friends
• Enjoying thrilling activities
• Jumping into unfamiliar places and situations

Such behaviors may have aspects that somewhat contradict knowledge acquisition and learning.

Pursuing social activities and stimulating experiences may reduce the time available for studying and skill acquisition.

Rather, moderate sociability and novelty-seeking might have a positive impact on knowledge acquisition.

Openness to feelings and values positively correlated with crystallized intelligence

Openness to feelings and values was found to have a positive correlation with crystallized intelligence.
People with strong tendencies in this area have the following characteristics.

• Value their own emotions
• Are sensitive to emotional nuances
• Are not afraid to express emotions
• Can empathize with others’ emotions

Additionally, people high in openness to values have the following characteristics.

• Question existing value systems
• Accept diverse value systems
• Value their own personal values
• Enjoy thinking about ethical issues

These characteristics may have a positive impact on knowledge acquisition and learning.

By being open to emotions and values, one may become able to flexibly accept various information.

Moreover, having one’s own values may also lead to motivation for learning.

Subfactors explained more than twice the variance of higher-order factors

Personality subfactors were found to explain more than twice the individual differences in intelligence IQ compared to higher-order factors.

This means that to understand “high-IQ personality,” it is necessary to focus not only on broad personality dimensions but also on more detailed personality aspects.

The relationship between personality and intelligence varies greatly depending on which aspects of personality are examined.

Therefore, to properly understand the relationship between personality and intelligence, it is essential to pay attention to personality sub

factors.

Looking only at higher-order factors may cause us to overlook important aspects of the personality-intelligence relationship.

The results of this study can be said to once again demonstrate the importance of subfactors in personality research.

Future research will likely need to investigate the relationship between personality subfactors and intelligence in even greater detail.

By doing so, the overall picture of the personality-intelligence relationship should become clearer.

What Questions Do High-IQ Personalities Answer

Item-level analysis predicted intelligence IQ even better than subfactors

When the relationship between personality and intelligence IQ was analyzed at the question level of personality tests, it was found to predict intelligence IQ even better than subfactors.
Question level refers to individual question items used in personality tests.
For example, questions such as “I often come up with new ideas” or “I enjoy tackling complex problems” would be applicable.
There was quite a strong relationship between response patterns to such questions and high intelligence IQ.
This means that the relationship between personality and intelligence can be understood at an even more detailed level than personality subfactors.
In other words, high intelligence may be connected to the details of how personality traits manifest.
However, item-level analysis requires more data.
Additionally, results may be influenced by the content and expression of questions.
While item-level analysis is a promising method for exploring the relationship between personality and intelligence, it needs to be conducted carefully.

Correlations between higher-order factors, subfactors, item-level and intelligence IQ increased significantly

The correlation between personality and intelligence IQ was found to increase progressively across upper-level items, lower-level items, and question levels.
Specifically, the following results were obtained.

• Upper-level items: r = .17
• Lower-level items: r = .32
• Question level: r = .44

In this way, the more detailed aspects of personality we focus on, the stronger the relationship with intelligence IQ becomes.
Particularly, the correlation coefficient at the question level showed a quite high value of r = .44.
This suggests that question-level analysis is very useful for understanding the relationship between personality and intelligence.
However, a high correlation coefficient does not necessarily mean there is a causal relationship.
The relationship between personality and intelligence is thought to involve various factors complexly intertwined.
Further research will be necessary to clarify the mechanisms behind these correlations.
In any case, the results of this study can be said to have demonstrated the importance of examining the relationship between personality and intelligence from multiple perspectives.

Question-level models show high predictive power even with different samples

Models that analyzed the relationship between personality and intelligence at the question level showed high predictive power even when applied to samples with different characteristics.
In this study, we used four large datasets (industry, MOOC, student, firefighter) and one Dutch sample to verify the generalizability of question-level models.
As a result, the following insights were obtained.

• Intelligence measurement methods differed between samples
• Subject characteristics varied greatly between samples
• Nevertheless, question-level models showed high predictive power

In other words, question-level models can be said to be robust models that are not easily influenced by sample characteristics.
Put differently, there may be universal aspects to the relationship between personality and intelligence.
However, this validation primarily focused on samples from Western cultural contexts.
Validation with samples from more diverse cultural backgrounds would also be necessary.
Additionally, further research is needed regarding the mechanisms by which question-level models possess high predictive power.
Question-level models can be said to be one promising approach for understanding the relationship between personality and intelligence.

High IQ personality: Age and gender effects are small

The influence of age and gender differences on personality-intelligence IQ correlations is small

It was found that the influence of age and gender differences on personality-intelligence IQ correlations is small.
In other words, the relationship between personality and intelligence does not change much with age or gender.
However, looking more closely, several interesting trends were observed.

• In those over 60, correlations between openness and neuroticism with intelligence IQ become stronger
• However, caution is needed in interpretation due to small sample sizes

There seems to be some possibility that the relationship between personality and intelligence changes slightly with age.
However, looking at the overall picture, the influence of age can be said to be limited.
On the other hand, regarding gender, it was found that there is almost no influence.
There appear to be no major differences in the relationship between personality and intelligence between men and women.
However, this analysis did not examine factors other than age and gender.
For example, cultural background and socioeconomic status may influence the relationship between personality and intelligence.
These factors will also need to be clarified in future research.

However, in those over 60, correlations between openness and neuroticism with intelligence IQ tend to become stronger

In elderly people over 60, it was found that correlations between openness and neuroticism with intelligence IQ tend to become stronger.
Specifically, the following results were obtained.

• The correlation between openness and intelligence IQ becomes stronger than in other age groups
• The negative correlation between neuroticism and intelligence IQ becomes stronger than in other age groups

However, caution is needed in interpreting these results due to small sample sizes.
In elderly people, intellectual curiosity and creativity may play important roles in maintaining intelligence.
Also, high neuroticism may accelerate the decline of cognitive function.
However, these remain in the realm of hypothesis.
Larger-scale studies will be necessary to clarify the relationship between personality and intelligence in elderly people.
Additionally, it is important to use longitudinal research designs to track changes associated with aging.
In any case, considering the influence of personality may be useful for maintaining and improving cognitive function in elderly people.
Future research progress is expected.

High IQ personality: Influence of research moderator variables

Studies using WAIS show stronger correlations between openness and intelligence IQ

Studies that used WAIS as an intelligence test showed stronger correlations between openness and intelligence IQ compared to studies using other tests.
WAIS is an abbreviation for Wechsler Adult Intelligence Scale.
It is known as a test that can measure cognitive abilities across a wide range, including verbal comprehension, perceptual reasoning, working memory, and processing speed.
The results of this study suggest the following possibilities.

• WAIS captures broader aspects of intelligence
• Therefore, relationships with personality became clearer

However, the number of studies using WAIS is limited.
Also, comparisons with other intelligence tests are not sufficient.
Further accumulation of research will be necessary to understand the relationship between WAIS and personality in more detail.
The choice of intelligence test can be said to have important meaning when examining the relationship between personality and intelligence.
It will be necessary to choose appropriate intelligence tests according to research purposes.
Also, combining multiple intelligence tests may enable a more multifaceted understanding of intelligence.

In high-stakes situations, correlations between personality and intelligence IQ become weaker

It was found that in high-stakes situations, that is, situations where results have important meaning, correlations between personality and intelligence IQ become weaker.
Specifically, the following situations apply.

• Job examinations
• Promotion examinations
• Entrance examinations

In such situations, people are thought to behave more carefully in an attempt to produce good results.
Therefore, their usual personality traits may become less apparent.
Additionally, in high-stakes situations, factors other than intelligence, such as motivation and emotional control, may have a significant impact on performance.
Such factors may obscure the relationship between personality and intelligence.
However, this study had limited data on high-stakes situations.
More data should be collected for detailed examination.
It is also important to explore the relationship between performance in high-stakes situations and personality and intelligence.
It is necessary to consider the possibility that the relationship between personality and intelligence may change in high-stakes situations.

High IQ Personality: Significance and Limitations of This Study

Significant Advancement in Understanding the Relationship Between Personality and Intelligence IQ

This study conducted the most comprehensive and detailed examination of the relationship between personality and intelligence IQ to date.
As a result, the following important findings were obtained.

• The relationship between personality and intelligence is quite complex and multifaceted when viewed at the sub-item or question level of personality
• In particular, intellectual curiosity, unconventionality, and openness to emotions and values are associated with intelligence
• On the other hand, sociability and orderliness have a negative association with intelligence
• The effects of age and gender are limited, but the influence of openness and neuroticism may strengthen after age 60
• The relationship between personality and intelligence changes depending on the type and context of intelligence tests

These findings represent a significant advancement in understanding the relationship between personality and intelligence.
In particular, the analysis at the personality sub-item and question levels provides important insights for future research.
Additionally, this study was able to obtain robust results using large-scale data.
Going forward, examination with more diverse samples and cultural backgrounds is needed.
Clarifying the mechanisms through which the relationship between personality and intelligence occurs is also an important challenge.
This study will serve as a foundation for such future research.

Limitations Including Cross-sectional Study Design, Scale Constraints, and Sample Bias

However, this study also has several limitations.
First, because this study used a cross-sectional research design, it cannot clarify causal relationships.
To understand how the relationship between personality and intelligence develops and how they mutually influence each other, longitudinal research is necessary.
Additionally, the personality and intelligence tests used in this study have certain constraints.
For example, in self-report personality tests, social desirability may influence the results.
Intelligence tests also do not measure all aspects of intelligence.
Using more diverse measurement methods might allow for a more detailed understanding of the relationship between personality and intelligence.
Furthermore, the samples analyzed in this study were mainly biased toward Western cultural spheres.
Examination with samples from more diverse cultural backgrounds is needed.
While these limitations need to be overcome in future research, they do not significantly diminish the value of this study.
Rather, this study can be said to have demonstrated the importance of examining the relationship between personality and intelligence from multiple perspectives.

In Conclusion

From this research, we learned that there is a complex and interesting relationship between our personality and intelligence.

In particular, it became clear that personality traits such as “openness” and “intellectual curiosity” are strongly connected to IQ.

On the other hand, it was also found that personality traits such as “neuroticism” and “sociability” have a negative relationship with IQ.
However, these associations were very weak.

It was also revealed that the relationship between personality and intelligence does not change much with age or gender.

This research is the most detailed investigation of the relationship between personality and intelligence conducted to date.

As more research is conducted in the future, our understanding of the relationship between personality and intelligence should deepen.

And such understanding might provide hints for each of us to live authentically.

※Personality can be measured with this HEXACO personality assessment!