What is IQ?
IQ in English stands for the word "lntelligent Quotient" and is used in psychology to measure human intelligence . Speaking of high IQ, people often think of intelligence and vice versa. People with high IQ often have the ability to manipulate, process and analyze information in more depth and faster than others .
So how to measure IQ?
For the first time, IQ score was used in France in the early 20th century when people wanted to overcome the difficulties children encountered when they started going to school. After that, the IQ test considered to be the most complete one was published by expert Hans Aizenk . The quiz became extremely popular in Europe in 1950s. Everyone measured their IQ scores both in office and at parties .
According to Mr. Hans Aizenk, in order to determine IQ, people need to take an IQ test with questions about logic, comparison, arithmetic, memory, general knowledge, calculation, logic puzzles, then compare the ratio of the score they achieved with an average score of different age groups achieved. IQ is not an absolute score, the scientists back then considered IQ as a ratio between mental age and “actual age” of humans. But then the IQ measurement has been improved in three standard deviations of 15, 16, 24 in order to overcome the deficiencies of the old method.
The determination of IQ is to diagnose and treat diseases that limit the ability to learn and identify education level as well as staff recruitment. However, it should not depend on the number of IQ to evaluate the possibility of a human since IQ test does not have the capability to analyze all aspects of a human being.
Throughout the life of a person, IQ is very little changed and not always tend to rise. It was found that IQ will stabilize at the age of 16 onwards and may increase slowly until age 30, then decreases. So the age at which the IQ development of a person is highest is around 20-30 years old.
An individual may try to improve their study to increase IQ. A typical example is the Japanese trying to train children to develop their brain activities by special curricula combining with nutritional nourishment. However, as mentioned above, the effect is only evident when a person is still in the developmental age (under 16) . To an adult, IQ has stabilized, brain training and exercise help IQ increased but not much.
Effects of IQ to human life ?
The real effect of IQ score is validated by controlling "the link between IQ and real life" with a benchmark of 1 indicating education and IQ have 0.5 relevance. Performance and IQ is 0.54. Thus a person with a high IQ is not necessarily super good at school or work with high performance.
Next, the relevant indicator between the total years of study and IQ is 0.55.
IQ and socioeconomic conditions of the parents is 0.33. This figure shows that the surroundings, living conditions also have an impact on the increase or decrease of IQ.
The IQ relationship between husband and wife is 0.4, that is, if both parties have similar understanding and equally logical reasoning, there will be chemistry and harmony.
Besides, scientists believe that people who have high IQ are often healthier and full of life than those with lower IQ. This is explained by their ability to avoid risks, know how to protect health and have a well economic life, know how to combat the negative emotions of life such as depression, sadness, despair and hopeless.
An especially interesting thing is the height ratio of parents and children related to IQ which is up to 0.47. While super intelligent parents tend to have less intelligent children, “normal” parents can have smarter children. This is the law towards the average people often mention in genetics.
Another special thing is that people who have high IQ tend to have “bad” memory while people with relatively low intelligence often have lasting memory. That is where we have the forgetful scientist characters.
Success is not influenced by the intelligence, rather it involves personal style in using one’s wits to get good results. That is the conclusion of scientists when talking about the influence of IQ to human life.
Statistics in the UK and the US shows that 35% of success in life is due to IQ. The remaining 75% is due to other indicators.
An interesting point from IQ test results of the scientists, the highest IQ score in the world is not only in wealthy, developed countries such as Europe and America but also in Asia such as Japan, South Korea, China, Singapore, Vietnam, Thailand... In these countries, the average IQ is 105 points. The second ranked place are European countries, USA, Canada, Australia, New Zealand where the average IQ is 100. South Asia, North Africa and the majority of Latin American countries have the average IQ of 85. And finally, African countries in general and the Caribbean have average IQ below 70.