The simplest way to measure intelligence is of course to give a test, and the problems in the test should obviously be reflected in the application of the above abilities. 1905, French psychologists designed the world's first intelligence test. These tests, each with 30 questions, test people's judgment, understanding and logic. This set of tests was adopted by the French government at that time to test the intelligence of school children, so as to find out people with lower intelligence and provide them with special education services. Later, the previously designed test was constantly revised, and a concept of "intellectual age" was obtained. Psychological age refers to the average intelligence level that children of a certain age group can reach. For example, an 8-year-old child performs as well in the intelligence test as an ordinary child of 10. We say that the child's intellectual age is 10, although his actual age is only 8 years old. Psychologist Stern put forward the concept of "IQ" in 19 16: If a child's intellectual age is the same as his physiological age, then his intelligence is average; But if his intellectual age is above or below his physiological age, his intelligence is above or below the average. IQ (I.Q.)= (intellectual age/physiological age) × 100% For example, in the above example, if a child's intellectual age is 10 and his physiological age is 8, then IQ = (10 ÷ 8 )×/kloc.
Intelligence quotient level
/kloc-genius above 0/40 or close to genius
120- 140 with superior intelligence
1 10- 120 has higher intelligence.
90- 1 10 general intelligence
80-90 is slow, even if it is retarded.
70-80 is between slow energy and low energy (each can be classified as low energy)
Below 70, it is determined to be low energy.
According to statistics,
About 50% of the population's IQ is between 90- 1 10, which is called "general intelligence".
About 25% of the population has an IQ below 90 (by definition, IQ 100 is of course the average intelligence level of the population).
The IQ is between 1 10 and 120, accounting for about14.5% of the population;
About 7% of the participants were between 120 and 130.
130 to 140, about 3%.
Only 0.5% of the population has an IQ over 140.
On the side of low intelligence, there is a similar distribution. For example, the IQ is between 70 and 80, with 7% and so on.
Visible, "genius" and "slow" people are very few; Most people have average intelligence. There are many ways to measure intelligence, such as observation, experiment, conversation, case investigation, job analysis, intelligence test and so on.