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Take the official international IQ test online

Are you curious about your current IQ?

Would you like to know where your intelligence level is compared to people around the world?

Then, take the IIQA's IQ test.
It is an international official IQ test designed by experts at IIQA, combining data from people around the world. Each year, new tests are created with newly accumulated data.

After the test, you can get expert evaluation and certification.

Test currently available: 2021 IQ test

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IIQA provides reliable IQ test

The tests provided by IIQA are designed based on test data, statistics and research data on a large number of subjects. It aims to comprehensively evaluate an individual's ingenuity, logical approach, learning and thinking skills known as IQ.

For an accurate and objective test, it is composed of questions that can be intuitively solved based on visual data without knowing language or math formulas, minimizing the difference in scores that may vary depending on cultural, social background, and educational level.

How to check my IQ?

The most recommended way is to take the test we provide.
We are an international association that provide international IQ test.
The official international IQ tests we publish are designed with numerous reviews with data updated annually, ensuring accurate IQ results.


On our website, you can take online IQ test.

What is IQ?

IQ stands for Intelligence Quotient and is a score calculated through a test designed to measure human intelligence.

At the beginning of the 20th century, scholars such as Alfred Binet, William Stern, Theodore Simon and others proposed and developed the first IQ tests that could be applied as a scoring method. However, today's IQ tests aim to numerically identify mental abilities such as ingenuity, logical approach, learning and thinking skills.

The IQ score is a standard score for a part of human intelligence. By knowing your own IQ, you can judge an individual's intelligence by comparing the IQ score against a normal distribution table.

IQ distribution

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The IQ score is expressed by quantifying an individual's intelligence based on the normal distribution table. So IQ always averages 100. About 68% of all humans have an IQ of 85-115, and about 95% of the population is located between 70-130. 2.5% of the population with an IQ of 70 or less may have a mental disorder, and 2.5% with an IQ of 130 or more are classified as gifted.

IQ & Academic achievement

Several studies have confirmed that intelligence has a deep genetic correlation. Due to the difference between the surrounding environment and the educational environment that you receive as you grow, you may be affected a little, but a significant part of your intelligence is natural born.

However, a high IQ does not lead to outstanding academic results. Most tests assess a person's competence in the field, not relative intelligence such as IQ. 

In the end, personal academic achievement should be supported by one's own persistence and effort rather than intelligence.

How is the IQ test designed?

IQ tests are built in a way that collects problems that highly intelligent people solve well. The experiment designer divides several groups in order of intelligence and let them to solve various types of many problems.

After testing, the designer sort out questions that were correct in the group with high mental ability, but wrong in the group with poor mental ability. Finally, by selecting and sorting out only the problems that are common or wrong according to the group, a short-form individual intelligence test, such as the one we provide, is created.

IQ Classification

Below 70

70~85

85~115

115~130

130~145

Above 145

Intellectual Disability

Dullness

Average

Superior

Very Superior

Genius

About Intelligence Quotient

A challenging problem made up of one question