Intelligence quotient (IQ) refers to the quotient of an intelligence test, which means dividing your mental age by your actual age and then multiplying by 100. It is generally believed that an IQ between 80 and 120 is considered normal, and an IQ above 120 is considered abnormal.

The IQ test includes eleven items, including tests on common sense, comprehension, arithmetic, analogies, memory, words, images, building blocks, arrangements, puzzles, and symbols. It takes about an hour to complete the entire test.

The IQ test is also called the IQ test. It was proposed by German psychologist L.W. Stern. IQ is a quantitative indicator that indicates the level of a person's intelligence, but it can also be expressed as a person's mastery of knowledge, reflecting a person's observation, memory, thinking, imagination, creativity, and ability to analyze and solve problems. .

Extended information:

Influencing factors of IQ:

1. Heredity:

Genes related to IQ have been found in different people There are different frequency distributions within species. Races with higher average IQs have more IQ genes than races with lower average IQs. Generally speaking, if parents have high IQ, their children's IQ will not be low.

This genetic factor is also reflected in blood relationships. Children whose parents are both locals have an average IQ of 102; children born to parents who are married in other provinces have an IQ of 109; parents who are cousins ??have low IQs. The number of children increased significantly.

2. Breast milk:

Breast milk contains a variety of active substances that promote children’s intellectual development, especially taurine, which has an important impact on intellectual development and is 10 times higher than that of milk. So many. According to surveys, children who grew up on breast milk have IQs about 3 to 10 points higher than those who grew up on milk substitutes.

3. Diet:

A monotonous diet leads to a lack of certain trace elements, or a diet that is too small and a serious lack of protein and other nutrients can lead to stunted IQ development. Excessive intake of multiple metal elements such as lead, copper, etc. can also affect IQ.

4. Weight:

Children who weigh 20% more than normal children will have lower vision, hearing, and ability to receive knowledge. This is because too much fat in obese children enters the brain, which will hinder the development of nerve cells and nerve fiber proliferation.

5. Environment:

Children who live in a boring environment, such as abandoned babies, do not receive maternal love and good education, and their IQs will be lower. According to research and surveys, the average IQ of such children is only 60.5 when they are 3 years old. On the contrary, the average IQ of 3-year-old children in a good environment is 91.8.

6. Drugs:

Some drugs can affect children’s intelligence. For example, long-term use of anti-epileptic drugs can lower IQ. After stopping the drugs for a few years, the IQ will decrease. improved.

Baidu Encyclopedia—IQ Test Method

Baidu Encyclopedia—IQ Test