Category: Intelligence

People with higher IQ have this cheerful quality.

Feeling happy and satisfied is linked to having a higher IQ.

In fact, experiencing positive emotions, feeling lively and wide awake all predict higher intelligence.

The conclusions come from two studies of 440 people who completed tests of personality and well-being/happiness.

When given a task to do, people with higher intelligence were less stressed both before and afterwards, as well as being more engaged, researchers found.

People who were happier and more lively were also more likely to agree with statements like:

• Am quick to understand things.
• Have a rich vocabulary, and intellectual engagement.
• Like to solve complex problems.

Positive answers to these questions matched up with an actual fluid intelligence test they were given.

In other words, smart people were right about being smart, they didn’t just ‘feel’ smart.

Fluid intelligence refers to the speed at which the brain works.

It is like the raw power of an engine or the speed at which a computer can process information.

The study’s authors conclude:

“The results indicated that Intellect was generally associated with lower stress (low distress and worry and high task engagement) before and after intelligence tests.”

Even without being given a test to do, people with higher IQs felt happier and more energetic.

The reason that IQ and happiness are linked could be down to how much importance is placed on being smart in Western cultures.

The authors write:

“It is striking that Intellect was correlated with affect even in Study 1, in which there was no requirement to perform an intellectual task.

At least in Western cultures, intellect may be of sufficient importance to the self-schema that it influences general emotional functioning.”

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The study was published in the journal Personality and Individual Differences (Zajenkowskia & Matthews, 2019).

Cognitive ability is higher in this personality type.

Laid back and unhurried people tend to have a higher IQ, psychological.

Intelligent people become more laid back because they can do things quicker than others, so do not need to rush, the authors speculate.

High IQ people also have a tendency towards procrastination — perhaps because another benefit of higher intelligence is being able to start tasks later.

The study also found that higher IQs was linked to be cautious and being a perfectionist.

This may be because being a perfectionist takes longer and people with higher IQs have the patience to wait until the job is done right.

The conclusions come from a study of 722 people who were given personality and IQ tests.

The personality tests focused on conscientiousness, one of the five major traits of personality.

Different aspects of conscientiousness were examined, including being cautious, deliberate, orderly and having a tendency to procrastinate.

The results revealed a consistent link between being unhurried and having a higher IQ.

The study’s authors explain:

“The common feature of these three characteristics (procrastination, perfectionism and caution) is timing or hurriedness.

One possible interpretation of our results is that people with greater cognitive ability tend to be less hurried in their general approach to life’s activities.

This interpretation implies both positive aspects (e.g., the cautiousness involved in checking details, delaying acting, and continuing with tasks until their product is “perfect”) and negative ones (e.g., the tendency to procrastinate).”

The link between procrastination and higher IQ is down to greater abilities, the authors think:

“This suggests a slower internal pace among more intelligent people that more easily allows for interruptions or the incorporation of new information while completing a task.

This is not to imply that more intelligent people are physically slower in their tasks, as in fact they appear to be faster at most tasks.

Rather, we are suggesting that one way in which those demonstrating higher levels of cognitive ability may differ from those exhibiting lower levels of cognitive ability is a behavioral tendency to pace their work or other tasks at less than their maximum potential ability.”

The study was published in the Journal of Personality Research (Rikoon et al., 2016).

Certain personality traits and this interest are signs of high IQ.

Musical training is a fascinating sign of high IQ, a study finds.

People with musical training tend to have IQs up to 10-15 points higher than those who do not.

The reason is probably that an interest in learning music is linked to higher intelligence, as well as certain personality traits.

Children whose openness to experience is greater are more likely to be interested in music lessons.

Typically people who are open to experience tend to have more interest in beauty, new ideas and be more curious about the world.

Higher IQ is strongly linked to the personality trait of openness to experience.

People who are conscientious are also more likely to stick at their musical training, the study found.

However, the study does not support the so-called ‘Mozart effect’, the idea that listening to certain music can make you more intelligent.

Professor Glenn Schellenberg explained:

“The prevailing bias is that music training causes improvements in intelligence.

But you can’t infer causation simply because children with music training have higher IQs than children who haven’t had music training.”

The study included 167 12-year-olds and 118 young adults who were asked about their musical training and given IQ tests.

The results showed that having a higher IQ was linked to taking music lessons, but personality predicted who stuck with it.

Professor Schellenberg said:

“The differences in personality are at least as important as cognitive variables among adults, and even more important among children in predicting who is likely to take music lessons and for how long.

Much previous research may have overestimated the effects of music training and underestimated the role of pre-existing differences between children who do and do not take music lessons.

Children who take music lessons may have relatively high levels of curiosity, motivation, persistence, concentration, selective attention, self-discipline and organization.”

The study was published in the journal Frontiers in Psychology (Corrigall et al., 2013).

The quality that people with higher IQ tend to have.

Freedom from prejudice is a clear sign that someone has a high IQ.

More intelligent people are less likely to be either homophobic or racist.

On top of this, more intelligent people are also more likely to be trusting of others and sensitive to other people’s needs.

The conclusions come from a couple of studies in which people were given IQ tests and asked questions that probed whether they were prejudiced.

In one survey of 15,874 people in the UK, participants were asked questions like:

• “I wouldn’t mind working with people from other races.”

Their answers to questions like this were compared with IQ tests they had been given as children.

The results showed that people with lower IQs tended to display more overt racism.

A second group of 254 people in the US were asked about their attitudes to homosexuals, as well as being given IQ tests.

Once again, the results showed that people with lower IQs were more likely to be prejudiced against gay people.

The researchers found that in both groups of people, those with lower IQs had lower contact with people from minorities — in this case, races other than their own and gay people.

The study’s authors conclude that:

“…we found that lower general intelligence (g) in childhood predicts greater racism in adulthood a predictive effect of poor abstract-reasoning skills on antihomosexual prejudice, a relation partially mediated by both authoritarianism and low levels of intergroup contact.

Our results suggest that cognitive abilities play a critical, albeit underappreciated, role in prejudice.”

Authoritarianism is a disregard for the feelings and wishes of others.

Unsurprisingly, this was also linked to prejudice.

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The study was published in the journal Psychological Science (Hodson & Busseri, 2012).

A range of positive traits like this one are linked to higher intelligence.

People with higher IQs are less aggressive and tend to follow the rules.

Since higher intelligence is linked to better behaviour, intelligent people are less likely to steal and cheat.

In contrast, younger people with lower IQs are more likely to alarm and harass others, as well as taking part in antisocial behaviour.

Antisocial boys typically have IQ scores 10 points lower than their more social peers.

The insights come from a study of over 1,116 pairs of twins in the UK.

The children were given tests of externalising behaviour and IQ.

Externalising behaviour refers to stealing, cheating, physical aggression and rule-breaking.

The study’s results showed that higher IQs were linked to lower levels of externalising behaviours.

Naturally, lower IQs were linked with more antisocial behaviour.

The study’s authors write:

“Low IQ is a consistent risk factor for emergence and continuity of antisocial behavior across the life course in both prospective and cross-sectional studies, even when other relevant risk factors are statistically controlled.”

Both genetic and situational factors are likely important in the link, the study’s authors write:

“…cognitive deficits might promote antisocial behavior if children with low IQs misunderstand rules, find it too difficult to negotiate conflict with words, find school frustrating, or become tracked with antisocial peers.”

Studies have also linked other positive traits to higher intelligence.

For example, one study has found that being cooperative is a sign of high intelligence.

Cooperative people are good at learning from experience and seeing the bigger picture.

They are generally helpful, mutually supportive and believe in teamwork.

More intelligent people tend to cautiously trust others at first and then build on this over time.

This helps them cooperate better in the long-run, the researchers found.

The study was published in the Journal of Abnormal Psychology (Koenen et al., 2008).

Two signs of a knowledgeable personality.

Introverts who have more stable personalities have higher levels of general knowledge, research finds.

These two personality factors, along with being open to experience, predict people’s general knowledge.

General knowledge — or as psychologists call it, crystallised intelligence — is one of two broad aspects of intelligence.

General knowledge is often linked to success in life because innate talent is not enough — application matters.

The other type is called ‘fluid intelligence’, and refers to abstract reasoning and the speed at which the brain works.

The conclusions come from a survey of 201 university students in the UK.

All were given tests of the five major aspects of personality: neuroticism, extraversion, openness to experience, agreeableness and conscientiousness.

They were also asked general knowledge questions such as:

• Who discovered penicillin?
• Who wrote Anna Karenina?
• Which Beatle was shot in New York?

(The answers are: Alexander Fleming, Leo Tolstoy and John Lennon, respectively.)

The strongest predictor of people’s general knowledge was their cognitive ability.

In other words, people whose brains work faster absorb more knowledge over the years.

However, personality was also important in how much general knowledge people had picked up.

Having a stable personality (being non-neurotic) and being more introverted, were both linked to greater general knowledge.

Other studies have also consistently linked the personality trait of openness to experience to general knowledge.

People who are open to experience are more likely to be imaginative, sensitive to their feelings, intellectually curious and seekers of variety.

With increasing age, general knowledge becomes more important, the study’s authors write:

“…at more advanced stages of life, performance and achievement are best predicted by crystallized intelligence (gc), rather than the biologically-based, content-free, and so-called ‘‘culture-free’’ tests of fluid abilities (gf) (traditionally
regarded as the best measures of g).

It thus seems that the predictive power of gf tends to decline as individuals progress through the educational system, and as acquired information and learned skills play a greater role in determining job performance.”

The study was published in the journal Personality and Individual Differences (Chamorro-Premuzic et al., 2006).

The more of the foods they consumed, the higher their IQs.

A diet low in sugars, fats and processed foods consumed at a young age may increase your intelligence.

Children under 3-years-old fed diets that are packed full of nutrients and vitamins have higher IQs.

The more healthily they eat, the higher their IQ.

The study followed the wellbeing and health of 14,000 children born between 1991 and 1992 in the UK.

What they ate was tracked up to the age of 8, when they were given an intelligence test.

The results showed that children who ate a health-conscious diet including more salad, rice, pasta, fish and fruit had higher IQs at age 8.

Those consuming more junk food high in fats and sugars had lower IQs.

The study’s authors conclude that:

“…a poor diet associated with high fat, sugar and processed food content in early childhood may be associated with small reductions in IQ in later childhood, while a healthy diet, associated with high intakes of nutrient rich foods described at about the time of IQ assessment may be associated with small increases in IQ.”

There was little effect on IQ from what children ate between ages 4 and 7.

The authors say:

“This suggests that any cognitive/behavioural effects relating to eating habits in early childhood may well persist into later childhood, despite any subsequent changes (including improvements) to dietary intake.

It is possible that good nutrition during this period [under 3 years-old] may encourage optimal brain growth.”

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The study was published in the Journal of Epidemiology and Community Health (Northstone et al., 2011).