Those with a score of 90 to 110 are within the normal intelligence range.
IQ is a 200-point scale. Those with a score of 90 to 110 are within the normal intelligence range, those with a score of 120 to 140 are considered smart, and those with a score of 140 or above are called geniuses. The lower the score, the worse the intelligence. Those with scores below 70 are intelligent. IQ is a quantitative indicator that indicates the level of a person's intelligence. It was proposed by German psychologist Stern in 1912. IQ is the abbreviation of intelligence quotient, which is expressed in English as IQ.
IQ is the quotient calculated by dividing mental age by biological age. The calculation formula of IQ is as follows: IQ=MA÷C.A×100. IQ indicates how smart a person is. The higher the IQ, the more intelligent you are. Biological age refers to a child's actual age after birth. Mental age or psychological age is the age measured based on intelligence measurements.
Influencing factors
1. Heredity: At least thousands of genes that affect IQ have been found. The results of comparing IQ genes of different races are also consistent with the average IQ. Genes related to IQ have been found to have different frequency distributions in different races. Races with a high average IQ have more IQ genes than races with a low average IQ.
It is generally said that if parents have high IQs, their children will not have low IQs. This genetic factor is also reflected in blood relationships. Children whose parents are both locals have an average IQ of 102; while children born to parents who marry in other provinces have an IQ of 109; and if the parents are cousins, the number of children with low IQs increases significantly.
2. Breast milk: Breast milk contains a variety of active substances that promote children's intellectual development. In particular, taurine, which has an important impact on intellectual development, is 10 times higher than that of milk. 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.