People, especially adults, love to measure everything. Measure and count.

First of all, let's find out what the word "IQ" means? IQ ( intelligencequotient) , or IQ is an attempt to calculate a person’s intelligence, to quantify it in comparison with other people.

The concept of IQ first appeared in 1912. It was introduced by the German Wilhelm Stern. Currently, a huge number of IQ tests have proliferated, which to some extent neutralizes the informational value of the obtained value. There is no single standard for IQ tests, however, they all have general principle construction. As a rule, taking several tests gives a more accurate and objective result.

IQ tests were designed so that the results could be described by a normal distribution. In general, IQ describes people's mental state quite objectively. 50% of people have an IQ between 90 and 110, 25% have an IQ of less than 90, and another 25% have an IQ of more than 110. Let's take a closer look at what iq scores mean.

What do iq test results mean?

For example, if the IQ is less than 70, then the subject can be classified as having mild dementia, while an IQ of more than 145 indicates genius. The average IQ value is 100. What does average IQ mean? This means that a value of 100 marks the peak of the normal distribution of test scores.

Tests usually contain about 40 tasks of increasing difficulty. To pass, you will need spatial and logical thinking, the ability to compare quantities, arithmetic, and a creative approach, as with.

What affects IQ?

Do you think that IQ is given by nature once and for all? To some extent this is true, but there are a huge number of factors influencing it! This includes heredity, diet, ecology, and methods of education.

The test results, we repeat, are ambiguous. One thing is certain - IQ does not determine fate. What does the IQ test give? Just knowing your IQ score. May be successful person with an IQ of less than 60 and a loser with an IQ of more than 130. Or this example. Arnold Schwarzenegger's IQ is 135, Sylvester Stallone's is only 54. And who is cooler is still not clear.

Today we learned what a person’s iq is. Find out your iq score, but don’t make hasty conclusions! And don't forget, a strict teacher and gaps in knowledge can create problems for any student, regardless of IQ level. In such cases, contact , who always guard your reputation.

Instructions

If you decide to test your IQ yourself, be mindful when choosing an IQ test. Numerous online resources offer a wide choice various tests IQ, but most of them do not have a reliable methodology and show inflated results in order to attract to the resource target audience. Choose tests from well-known authors whose reliability has been statistically proven. Among them are tests for determining IQ by Eysenck, Wechsler, Amthauer, Cattell and Raven's progressive matrices.

IQ tests developed by Hans Eysenck are the most popular among psychodiagnosticians. Eysenck created eight versions of IQ tests for different target groups in the age range of 18-50 years. The first five Eysenck tests are called general and allow you to find out the general level of intellectual development. Eysenck's three specialized IQ tests are aimed at deeper testing and assessment of mathematical, verbal and visual-spatial abilities.

If you are under 18, you can test your IQ using David Wexler's age-appropriate WISC test. Wechsler tests assess intelligence quotient using eleven subtests, distributed on two scales - verbal and nonverbal. In the West, the Wechsler method has become widespread due to its reliability. Wexler IQ tests are routinely taken by school and higher education students. educational institutions, job applicants and children preschool age. The Wechsler Adult Intelligence Scale (WAIS) test has also been adapted into Russian for the age group from 16 to 64 years.

IN HR departments large corporations When assessing personnel, the IST (Intelligence Structure Test) is used. This is a multilevel IQ test developed by German psychologist Rudolf Amthauer. IST allows you to create a detailed profile of the test subject's intelligence according to several complementary criteria. If you are over 18 years old and decide to test your IQ not just out of curiosity, choose IST, it guarantees high validity of the results.

IQ test statistics are based on a normal distribution. The average value of the coefficient is taken to be 100. This indicator is considered the norm, the standard. A preschool child and an academy graduate may have an IQ of 100. This means that their mental age matches the chronological age of a particular age group. IQ scores greater than 100 indicate that your cognitive abilities are above the average for your age group. Values ​​above 120 on the Eysenck and Wechsler scales are considered an indicator of giftedness, above 140 - genius.

Highest IQ in the world. Top 10 smartest people, photo.

The brain is the most mysterious part of the human body. It is the brain that is responsible for our mental abilities. But why is the intelligence of some people different from the intelligence of “mere mortals?” There are a lot of hypotheses on this score, but they all remain assumptions. There was no reliable direct relationship between brain size, heredity, nationality, environment, intensity of learning and superpowers.

For example, scientists examined Einstein's brain, but did not find any differences in its composition, size and weight from the brains of other people. As a rule, children with outstanding mental abilities are born into simple families. Education, of course, matters, but often brilliant children demonstrate their intelligence in infancy.

Let scientists continue to put forward hypotheses, conduct research and write dissertations (this is their bread) to reveal the nature of genius, but for now let us consider that genius is a gift of God.

There are many highly intelligent people living on the planet. To rank geniuses, they usually use an indicator such as IQ - intelligence quotient. Of course, intelligence includes so many components that no test will give an absolutely accurate indicator of the level of intelligence, moreover, there is no single standard for IQ tests yet, but today the world has not come up with anything better.

Top 10 record holdersIQin the world.

This rating includes only famous people, with generally recognized transcendental intellectual abilities. It is likely that there are people in the world who will show better results, but they are either unknown to anyone or deliberately do not advertise their abilities. Not all intellectuals agree to take this test. For example, the famous St. Petersburg mathematician Grigory Perelman, who proved the Poincaré conjecture, did not pass this test. Looks like he has more important things to do.

The most famous IQ test is the Eysenck test. More accurate are the tests of D. Wexler, J. Raven, R. Amthauer, R. B. Cattell. Typically, intellectual examinees take several different tests. For example, the scores of different tests for the only woman in this rating range from 170 to 228 points. Therefore, this rating shows a certain average indicator for each intellectual.

Garry Kasparov (Weinstein), grandmaster - IQ 190.

Garry Kasparov shocked the world when he became the youngest overall world chess champion at the age of 22 in 1985, defeating defending champion Anatoly Karpov. In 2003, Kasparov drew with a chess computer that could calculate three million chess positions per second.

Philip Emeagwali, scientist - IQ 190.

Nigerian scientist, winner of the 1989 Gordon Bell Prize awarded by the Institute of Electronics and Electrical Engineers. Received an award for using a supercomputer to monitor oil fields. The uniqueness of the device lies in the fact that it consists of 65,000 parallel processors.

Marilyn vos Savant, Austrian-born American writer, playwright and journalist - IQ 190.

The only representative of the fair sex on this list. The surname Savant comes from the French verb savoir ("to know") and means "wise man". From 1986 to 1989, Sawant was included in the Guinness Book of Records as the owner of the highest IQ among women. Honorary member of Mensa, an organization for people with high IQs. Perhaps Marilyn is the only woman on this list because the authors of all versions of IQ tests are men.

Mislav Predavets(Mislav Predavec), Croatian mathematician - IQ 192.

A professor of mathematics in the Croatian capital of Zagreb, Mislav is also the owner and director of a small trading company.

Ranks 7th on the list of the 10 smartest people in the world. Mislav is the founder and president of the elite society of the smartest people in the world, GenerIQ. It is worth noting that the number of members of this elite society of intellectuals does not exceed two dozen geniuses. Obviously, not all child prodigies want to join this community. However, this does not detract from the merits of this Croatian.

Rick Rosner American television producer, screenwriter and actor - IQ 192.

Rick Rosner worked as a doorman, waiter, fashion model, and stripper until he got a job as a television screenwriter. IQ is not always proportional to life achievements, not all the most smart people planets have academic degrees and titles. Rick Rosner is just such an exceptional case.

Rick Rosner describes himself as a "cognitive freak of nature." He took a ton of IQ tests and scored astronomically high. He has a certificate proving he has an IQ of 192 - the uninhabited territory of geniuses like Isaac Newton and Leonardo da Vinci.

Christopher Michael Langan American astrophysicist - IQ 195.

Christopher began talking at 6 months, and at 3 years old he began to learn to read. According to Christopher himself, during his school years he was engaged mainly in self-study, independently comprehending mathematics, physics, philosophy, Latin and Greek. He considers himself self-taught.

For a long time he was considered “the most smart person in America". His IQ when passing various tests ranged from 195 to 210 points.

When Langan's genius became known, he said that he led a double life - he worked as a bouncer, a cowboy, a firefighter in the forest service, a laborer, and in the evenings, returning home, he sat down to his work - the theory of the Cognitive Theoretical Model of the Universe (Theory of Interconnection between mind and reality).

Evangelos Katsuolis(Dr. Evangelos Katsioulis) - practicing Greek psychiatrist - IQ 198.

According to some reports, he passed one of the tests with an IQ of 258. Dr. Katsuolis has degrees in philosophy, medical research technology and psychopharmacology. In addition, he is a good artist and an excellent swimmer.

Currently, Katsuolis is a member and even the founder of several societies for people with high IQs.

Kim Un-young, Korean engineer, child prodigy - IQ 210.

He began speaking and understanding Korean and other languages ​​at 6 months. At 3-4 years old, he was already reading in Korean, Japanese, German and English, and also solving complex mathematical problems. At the age of 4, he demonstrated his abilities live on Japanese television Fuji TV. At the age of 8, he was invited by NASA to study at Colorado State University. In 1978 he returned to Korea, where he worked at Chungbuk National University until 2007.

Now Kim is enjoying what he was previously deprived of as a child, that is, rest. He abandoned the career in science or business that his compatriots predicted for him. In one of the interviews he said very important words: “There are not many people in the world who can do what they want, but I could. If this is not success, then what do you call a happy life?

Christopher Hirata, American astrophysicist of Japanese origin - IQ 225.

At the age of 14, Hirata entered the California Institute of Technology, and at the age of 16 he was already working at NASA on projects related to the colonization of Mars. At the age of 22, he received the title of Doctor of Science in astrophysics. Hirata explores dark energy, gravitational lenses and other interesting gizmos that are incomprehensible to mere mortals.

Terence Tao, now an American mathematician, of Chinese descent from Australia - IQ 230.

Thus, Terence Tao is the most brilliant intellectual known to mankind today (if you go by IQ).
Tao had knowledge of basic arithmetic and mastered English language by 2 years. By the age of 5, the little child prodigy could solve complex mathematical problems. At the age of 12, he already participated in the International Mathematical Olympiad. At the age of 24, Tao worked as a teacher at the University of California. Tao received the Fields Medal and medal featured in the film Good Will Hunting in 2006 at the age of 32. By the way, the Russian mathematician Grigory Perelman refused the Fields Medal in the same 2006.

Information for those who want to compare their IQ level with representatives of this rating: the minimum IQ level according to the Eysenck test is 70 points, the Average IQ level ranges from 100 to 120 points. If you show results above 120 points, then you can brag about it. However, keep in mind that today any educational or entertainment site on the Internet may offer you to take a test for the notorious IQ, but it will not be the same test that the smartest inhabitants of our planet took.

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IQ tests - FIND OUT YOUR INTELLIGENCE LEVEL!

We have collected BEST FREE IQ TESTS . In the allotted time, answer all 40 questions and identify your weak and strengths. Make intelligence your main ally to achieve your goals!

Choose any of the IQ tests below and get started. Good luck!

Looking for free texts on intelligence? You found them! Typically, the structure of each IQ test is a list of questions, including quite simple tasks, and very complex. For example, the test subject is asked to cope with tasks that will help determine the quality of your spatial and logical thinking. We have prepared a whole series of tests for you. Choose any free IQ test (we don’t offer paid ones:) and start brainstorm! You can do it!

How world celebrities passed IQ tests

The name of	Field of activity	Accommodation	Result
Abraham Lincoln	Head of State	USA	IQ - 128
Adolf Gitler	Head of State	Republic of Germany	IQ - 141
Albert Einstein	Scientist in the field of exact sciences	USA	IQ - 160
Andy Warhol	ART activist	USA	IQ - 86
Arnold Schwarzenegger	Action movie hero	Republic of Austria	IQ - 135
Benedict Spinoza	Adept of Philosophy	Republic of Holland	IQ - 175
Benjamin Franklin	Political figure	USA	IQ - 160
Bill Gates	Founder of Microsoft Corporation	USA	IQ - 160
Bill Clinton	Head of State	USA	IQ - 137
Blaze Pascal	Adept of Philosophy	Republic of France	IQ - 195
Bobby Fischer	Athlete chess player	USA	IQ - 187
Buanarotti Michelangelo	Architectural genius	Republic of Italy	IQ - 180
Charles Darwin	Founder of the theory of evolution	Great Britain	IQ - 165
Charles Dickens	Literary figure	Great Britain	IQ - 180
David Hume	Adept of Philosophy	Great Britain	IQ - 180
Galileo Galilei	Scientist in the field of exact sciences	Republic of Italy	IQ - 185
George Frideric Handel	Musical genius	Republic of Germany	IQ - 170
George Sand	Literary figure	Republic of France	IQ - 150
George Bush	Head of State	USA	IQ - 125
George Washington	Head of State	USA	IQ - 118
Hans Christian Andersen	Literary figure, poet	Republic of Denmark	IQ - 145
Hilary Clinton	Political figure	USA	IQ - 140
Imanuel Kant	Adept of Philosophy	Republic of Germany	IQ - 175
Isaac Newton	Scientist in the field of exact sciences	Great Britain	IQ - 190
Johann Sebastian Bach	Musical genius	Republic of Germany	IQ - 165
Johann Strauss	Musical genius	Republic of Germany	IQ - 170
John Kennedy	Head of State	USA	IQ - 117
John Locke	Adept of Philosophy	Great Britain	IQ - 165
Joseph Haydn	Musical genius	Republic of Austria	IQ - 160
Kasparov Garry	Politician and chess player	Russian Federation	IQ - 190
Leonardo da Vinci	Brilliant personality	Republic of Italy	IQ - 220
Lord Byron	Literary figure	Great Britain	IQ - 180
Napoleon Bonaparte	Conqueror	Republic of France	IQ - 145
Ludwig van Beethoven	Musical genius	Republic of Germany	IQ - 165
Madonna	Pop singer	USA	IQ - 140
Miguel Cervantes	Literary figure	Spanish Republic	IQ - 155
Nicolaus Copernicus	Scientist in the field of exact sciences	Republic of Poland	IQ - 160
Nicole Kidman	Actress	USA	IQ - 132
Plato	Adept of Philosophy	Republic of Greece	IQ - 170
Raphael	Genius of sculpture	Republic of Italy	IQ - 170
Rembrandt	Genius of sculpture	Holland	IQ - 155
Richard Wagner	Musical genius	Republic of Germany	IQ - 170
Shakira	Pop singer	Colombia	IQ - 140
Sharon Stone	film actress	USA	IQ - 154
Sofia Kovalevskaya	Mathematician, literary figure	Russian Federation	IQ - 170
Stephen Hawking	Scientist in the field of exact sciences	Great Britain	IQ - 160
Wolfgham Amadeus Mozart	Musical genius	Republic of Austria	IQ - 165

What is this mysterious “IQ Test”?

All people are different. Therefore, it is not surprising when one person has a more developed level of intelligence compared to another. Each of us has a certain idea of ​​our capabilities. But how to measure them accurately? In this case, in most developed countries of the world, it is the IQ test, expressed in points, that comes to the rescue.

Translated from English, the abbreviation IQ means “intelligence quotient.” This indicator represents quantification the level of intelligence of an individual in comparison with the same indicator belonging to the average person of the same age as the test subject. IQ can be determined by passing the tests presented above, which (as experts point out) may not assess an individual’s existing knowledge, but they do determine his thinking abilities. Our IQ tests are free chances to find out how developed your intelligence is!

The structure of each IQ test is a list of questions, which are both simpler and more difficult. The subject is asked to cope with tasks related to determining the quality of spatial and logical thinking in a person. There are very different variations of questions. As practice shows, the higher the experience in passing these tests, the better the results. The Eysenck test is the most famous among such IQ tests.

Scientists note that half of people have an IQ in the range of 90-110 points, the rest are either below 90 or above 110 (about 25% each). According to American researchers, the average score of this test among graduates of higher educational institutions is 105 points. For excellent students it is 130-140. It is believed that you need to work on improving your mental abilities when your IQ is below 70.

IN last years IQ tests have gained incredible popularity among the entire population of the planet. They are used everywhere: when applying to universities and colleges, during job interviews, when passing driver's license exams, and so on. Russia also did not stand aside. The population of our country is entirely interested in knowing the level of their own intelligence, which is why many residents try to learn as much as possible about tests to determine intellectual abilities and are not averse to taking them. The big advantage of such intelligence tests is their accessibility. If you search the Internet for IQ tests, you will certainly find free ones. Moreover, not all of them will be correctly composed. The uniqueness of our site is that we give you the opportunity not just to take a free IQ test, but to try to pass a test compiled by an experienced specialist. That is, we have real IQ tests.

It is worth noting that the average IQ of the population of a particular country depends on the efficiency of the state machine and the level of gross domestic product. In addition, a study was conducted that found a relationship between the social intelligence factor and average results on the Unified State Exam (the foreign analogue of the SAT).

IQ tests: how they are constructed

There are other variations of questions. As practice shows, the more experience you have in passing these tests, the better the results. The most famous among such tasks is the Eysenck test. Good accuracy is demonstrated by tests bearing the names of their creators: D. Wexler, J. Raven, R. Amthauer and R. B. Cattell. At the same time, to date no one has yet introduced a single standard to which existing IQ tests would adhere.

All tests are divided into groups by age in order to give an accurate assessment of a person’s intellectual development, corresponding to his age. In other words, the results of IQ tests can be the same - for example, an 11-year-old child and a master's degree in mathematics. This is all because they are equally developed for their age. If we take the Eysenck test, the creator developed it to determine the level of intelligence in people over 18 years of age.

History of IQ and what influences it

Back in 1912, the German scientist Wilhelm Stern introduced the then unusual concept of “intelligence quotient” to the general public for the first time. While conducting his research, he turned his attention to the shortcomings inherent in one of the indicators of the Binet scales, namely mental age. To determine an accurate assessment of an individual's intelligence, Stern proposed dividing mental age indicators by real age (also called chronological), and taking the remainder of this operation.

The first appearance of the term IQ dates back to 1916, when it was used in the Stanford-Binet scale. But today (perhaps due to the greatly increased interest among the population in IQ indicators) there are several other scales, the validity of which has not been proven. Therefore, it is now quite difficult to compare the results shown by different tests. Therefore, psychologists often recommend turning to classical tests to determine the IQ. These are the tests we have selected for you.

Reasons affecting IQ

Naturally, one of the main reasons that has a serious impact on IQ levels is heredity. The main emphasis in the ongoing research on determining the relationship between these two indicators was on children. The results of these studies resulted in quite a wide range of readings: some scientists stated that less than half of IQ depends on existing genes; and others even cited data reporting almost one hundred percent dependence. The rest that could affect the results of IQ tests is environment and the situation, as well as all sorts of errors inherent in such measurements. That is, according to such studies, it turns out that the level of IQ largely depends on hereditary genes.

Another reason that influences IQ scores is individual genes (the brain activity of an ordinary person depends on approximately 17 thousand genes). Research shows that individual genes influence an individual's existing IQ level, but in fact their influence does not have a strong effect. This dependence, revealed during the research, turned out to be at the level of statistical error.

Currently, research has begun to look for differences in the genome in people with high and low IQ levels. If someone manages to figure out the genetic causes of “braininess,” then perhaps there will be a means to increase a person’s IQ level. States with such knowledge will quickly move forward in terms of economic and technological development.

The third reason that can affect IQ level is the environment. Of course, everything that is around a person (especially the family) influences his development. Research has identified many factors for this dependence. They included family income, the size of the house and its price, the developing relationships between all family members, and so on. This dependence is characterized by a coefficient equal to 0.25-0.35. But as a person grows older, this influence gradually decreases until it reaches zero around adulthood (these studies concerned only a full family with two parents and two children).

Improper nutrition can also affect the level of IQ development. Thus, recent studies have shown that eating fish products by a pregnant woman has a beneficial effect on the intellectual development of her unborn child.
Another study, involving about 13 thousand people, determined that breastfeeding also has a positive effect on the infant's intelligence. However, it should be noted that immediately after the publication of this study it was criticized. The reasons for the scientific “attack” were an incorrect analysis of the data obtained and a complete disregard for existing theories.

Differences in IQ across human groups

According to most experts, on average, there is no significant difference in the level of intelligence development between men and women belonging to the same age group. But it is among the male population that the most striking variation in this indicator is observed: that is, there are a lot of men with high level intelligence and also many who have a fairly low IQ. In addition, it is expressed this indicator It's a little different for women and men. This is especially noticeable after five years. At this age, boys begin to show superiority over the fair half of humanity in terms of spatial intelligence and manipulation. Girls demonstrate better verbal functions.
Men are also gaining leadership in the area of ​​mathematical abilities. One of the American researchers came to the conclusion that for every 13 men who have excellent abilities in mathematical operations, there is only one woman equal to them.

Racial differences

Numerous studies have been conducted to identify differences in the average IQ level among residents of the United States of America and have led to the following conclusion: among representatives of the African-American population this indicator was 85 points, among Latinos - 89, whites - 103, Asians - 106, and Jewish - 113.

At the same time, the average IQ level, if we consider data from tests half a century ago, shows some changes. So, today the IQ of the Negroid race in 1995 corresponds to the IQ of white people who lived in 1945. Therefore, it seems impossible to “blame” everything on the genetic characteristics of people.

One should not ignore such an important factor as the influence of society on the development of intelligence. This is especially noticeable in orphans. For example, in the same USA, the IQ level of children raised by representatives of the white race is approximately 10% higher than that of those who lived in a black family. And in the UK, this indicator varies even more interestingly: in boarding schools, black children have a higher IQ than their white peers.

During the research, scientists discovered a pattern consisting in the existing difference in the average IQ level between residents different countries. According to certain data, this indicator is influenced by the current size of GDP, practical use democratic foundations, crime and birth rates, the percentage ratio between believers and atheists. In developing countries, in addition to the above reasons, the average IQ level and poor quality nutrition, coupled with numerous diseases, also have an impact. In this regard, we ask you to familiarize yourself with this interesting map...

Relationship between health, age and IQ

A properly formulated diet, especially on early stages human development, has a beneficial effect on the development of intellectual abilities. An example is the factor of iodine deficiency in the body: if it is present, the average IQ score decreases by 12 points. Those who have a fairly high IQ live longer and get sick less often.

IQ acts as a measure of a person's intellectual abilities, which reach maximum values ​​at 26 years of age. Then they gradually decrease.

The IQ of an adult, to a greater extent than that of children, is determined by genetic inheritance. For the latter, this indicator is influenced by the environment. Some children, due to certain life characteristics At first, they are ahead of their peers in terms of intelligence, but over time their indicators level out.
School achievements

Representatives of the American Psychological Association noted that children whose results on IQ tests are high are much better at mastering the material presented in school than those who receive lower scores. This correlation reaches 0.5. Tests to determine the level of intelligence make it possible to pre-select naturally gifted children in order to teach them in a separate, accelerated program.

Revenues, scrime and IQ

Some of the research devoted to the influence of IQ level on a person’s life shows that higher intelligence increases the productivity of an individual and, accordingly, his income increases. Moreover, this indicator does not depend on a person’s social environment, including his family.

The American Psychological Association noted in one of its reports that intelligence level has little to do with a person’s propensity to commit crimes. The correlation in this case is only 0.2. It is important to note here that cause-and-effect relationships are indirect. That is, poor performance at school is not always explained by a low IQ level, but it often influences the possibility of a person becoming criminal.

Arthur Jensen provides information according to which the largest percentage of crimes occurs among people with an IQ ranging from 70 to 90 points.

Scientific achievements, etc.ore activity

According to some studies, it can be concluded that success in the scientific field is largely dependent on character traits such as determination and innovative thinking. But Dr. Eysenck cites other data according to which the level of intelligence of successful scientists is lower than that of their colleagues who received Nobel Prize. The average IQ test scores were 166. At the same time, some scientists demonstrated the highest possible level of 177 points. Spatial IQ was, according to the scientist, 137 points, although at a younger age it should have been higher. And the average mathematical IQ is 154.

Two scientists, Frank Schmidt and John Hunter, came to the conclusion that, given an equal amount of experience, the person with the higher IQ level will be more productive. As researchers note, the development of intelligence affects all types of human activity, but its level differs depending on the chosen field of activity. From this we can conclude that work that requires long-term brain work will not be available to those with a low IQ. And at the same time, the size of this coefficient will not seriously affect activities related to physical activity.

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IQ – intelligence quotient. Over the last hundred years, psychologists and doctors have become interested in the question of how to classify and quantify the intellectual abilities of people. In this regard, many intelligence tests appeared, with the help of which the authors sought to rank the planet's population.

Subsequently, most IQ tests were criticized. Thus, it was found that by taking an IQ test several times, you can learn to solve it, as a result of which the test will show an inflated result. In addition, most of the tests that can be found today, including on the Internet, do not stand up to criticism, and their results are often deliberately inflated.

The Eysenck IQ test, which is so popular, also, according to most scientists, does not fully reflect a person’s real mental abilities. Today, the Wechsler test is recognized as the most successful, which assesses a person’s intelligence on 11 scales using specially developed 11 subtests. To interpret the data from this test, special training is required for the diagnostician, therefore, despite high degree objectivity, the test is not widely used.

IQ and heredity

After tests were created, albeit with large errors, assessing the IQ of people, scientists became interested in whether IQ level is a genetically inherited factor. A number of studies have been conducted, the results of which have had quite significant differences. However, the generalized data allowed us to draw the following conclusion: human intelligence is 40-80% inherited, and 60-20% is the result of environmental influences.

Currently, a project has been launched whose goal is to discover genes responsible for the development of intellectual abilities and determine the mechanisms of inheritance of this trait.

IQ and gender

There is still ongoing debate regarding differences in the levels of male and female intelligence. However, most studies suggest that the intellectual abilities of men and women are on average equal, noting that among men there are more often those whose intelligence is below or above average, while among women there are more people with average intelligence. Men are better at tasks assessing spatial thinking, while women are better at questions assessing verbal abilities.

IQ and race

Some studies have found that African Americans have lower IQ scores on average than other races. However, it has been clearly shown that this difference is a consequence low level education in most African countries. African Americans living in developed countries, in particular in European countries, are not inferior in IQ to white-skinned people. A study published in 2002 showed that residents of Asian countries: Korea, China, Hong Kong, and Japan have the highest intelligence. Their average intelligence was 104-107 points. The Russians were in 24th place with their average population level of 97 points. The last place in terms of IQ level was taken by residents of Ethiopia and Equatorial Guinea, whose average IQ score was 66 points.

In general, it has been established that IQ among the human population of the Earth has tended to increase over the last hundred years.

IQ and age

The highest IQ scores are demonstrated by young people aged 26 years. Subsequently, IQ begins to decline.

IQ and career

A reliable inverse relationship has been established between the level of intelligence of job applicants and the time spent by them on mastering certain skills. Thus, when hiring a job related to mental work, the employer can reasonably count on more high performance people with high IQ numbers.

According to the data available today, the speed of mastering new skills depends on IQ by almost a third. Among other reasons that make a big contribution to work productivity, experts cite the ability to communicate in a team, psychological characteristics of the individual, etc. At the moment, there are no reliable tests assessing the contribution of other personality traits to the final performance of work.

IQ test scores

Most intelligence tests are designed to ensure that at least 50% of the population has an average IQ, with 25% of the world's population scoring below and above average. The median intelligence of the human population is usually taken to be 100. Thus, for the Eysenck intelligence test, the average IQ values ​​are 90-115 points. Many researchers consider an IQ of 75 points or lower as an indicator of intellectual deviation - mental retardation.
It has been established that the average IQ of outstanding scientists is 154-166 points, the IQ of candidates of science is 125, the IQ of those who have received higher education is 115 points. People with unfinished higher education, people working in sales, as well as the so-called office workers show IQ in the range of 100-110 points. The IQ of skilled workers (electricians, mechanics, etc.) averages 100 points.