Countries by Average IQ

IQ is a measure of a person's cognitive ability compared to the general population. It is calculated through standardized tests designed to assess human intelligence. The average IQ is set at 100 in most IQ tests, with scores above and below this number indicating higher and lower cognitive ability, respectively.

The process of measuring IQ involves a series of tests that assess various aspects of intelligence, including memory, problem-solving skills, mathematical ability, and linguistic skills. These tests are carefully designed and calibrated to ensure accuracy and fairness.

Our article draws heavily from the study "The Intelligence of Nations" by Richard Lynn and David Becker, which provides a comprehensive dataset of national IQs. The study uses a rigorous methodology to estimate and calculate national IQs, ensuring transparency and accuracy. Some highlights from the study include Japan having the highest average IQ in the world, and the observation that factors such as education, healthcare, and socio-economic conditions can significantly influence a country's average IQ.

As we explore the average IQ by country, it's important to remember that IQ is just one measure of cognitive ability and does not capture all aspects of human intelligence. Furthermore, a country's average IQ is not a definitive measure of its citizens' potential or capabilities. With that in mind, let's delve into the intriguing world of IQs.

The data points presented are defined as follows:

• Average IQ - A measure of a person's cognitive ability compared to the general population. It is calculated through standardized tests designed to assess human intelligence.

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To sort the data in the table, click on the column headers.

1. What Country has the Highest IQ?

The country with the highest average IQ is Japan, with an average IQ of 106.48, according to "The Intelligence of Nations - 2019" by Richard Lynn and David Becker. This high average IQ is likely due to a combination of factors, including Japan's rigorous educational system, significant investment in research and development, and efficient policies, particularly in education and technology.

2. What is the Average IQ in the UK?

According to "The Intelligence of Nations - 2019" by Richard Lynn and David Becker, the United Kingdom has an average IQ of 99.12 - the 20th highest average IQ in the world. This figure is based on several studies and measurements, including the Wechsler Intelligence Scale for Children-Revised (WISC-R), the Standard Progressive Matrices (SPM), and the Coloured Progressive Matrices (CPM), among others.

3. What Country has the Lowest IQ?

According to the most recent global study of IQ "The Intelligence of Nations - 2019", the countries with the lowest IQ scores are Liberia and Sierra Leone, both with a final national IQ of 45.07, and Nepal with a final national IQ of 42.99. However, the authors caution that these extremely low IQs could not be confirmed by school assessment studies and that the results should be viewed with reservations due to the age of the studies and the use of ethnic minorities in the samples.

The Intelligence of Nations