Intelligence quotient (IQ) tests are a series of tests used to determine the general intelligence of an individual in relation to other people the same age and the result is called an IQ score. Test results are calibrated to give people an average intelligence a score of 100, with numbers above and below this following a Gaussian or Bell curve.
Background of IQ Tests
Sir Frances Galton was one of the first scientists to establish the Intelligence Quotient Test. This British scientist conducted research and made comparisons of diverse groups according to their abilities to carry out certain tasks. His study guaranteed him that there must be a way to calculate human intelligence. After Galton, a different kind of IQ test was developed by Alfred Binet, a French psychologist. Along with Theodore Simon, Binet invented tests for memory, vocabulary, practical knowledge, reasoning, and problem solving skills. In contrast to Galton’s test, the Binet-Simon IQ test was more accurate in predicting scholarly success, and it is still the standard formula from which many of today’s intelligence tests were derived. 
Alfred Binet’s test was brought to the United States by Henry Goddard. There, the formula was revised by Lewis Terman, and a new scoring system was developed. With this scoring system, a person’s IQ test score will be judged against the performance of people of the same age.
Reference chart
| Intelligence Interval | Cognitive Designation |
| 40 – 54 | Severely challenged (Less than 1% of test takers) |
| 55 – 69 | Challenged (2.3% of test takers) |
| 70 – 84 | Below average |
| 85 – 114 | Average (68% of test takers) |
| 115 – 129 | Above average |
| 130 – 144 | Gifted (2.3% of test takers) |
| 145 – 159 | Genius (Less than 1% of test takers) |
| 160 – 175 | Extraordinary genius |
Why people need to calculate IQ?
Everybody loves to have a superior memory, also love to be extra intelligent.
Memory enhancement formulas have represented approximately for such a long time, maybe thousands of years in fact. The ‘Memory Palace’ formula as well known as the ‘locus’ technique is considered to be amazing used some hundred years ago and now still extremely effective to this day. Learning such formulas not only profit your memory deeply; but also work out your mental power and can finally boost your brainpower ability.
It also works the other way round, Brain Training formulas can ultimately improve all teenagers memory as well, and have absolutely big benefit to bring you out on top when taking any free IQ tests. To start training your brain, here are simple systems you can start right away:
1. Start with Solving Sudoku and extra logic puzzles every day and advance the level step by step.
2. From time to time take a dissimilar way to work, this method is already accepted to keep our mind working and improve day by day.
3. Try explaining something exceptionally complex to someone occasionally.
These Formulas may look so easy and have nothing, but if all teens practiced on a regular basis, you can start seeing those great results instantaneously.
IQ result make you be more acquainted with yourself potential today and with the result you can stimulate to aim your actual aspiration to the great future career with what you found.
So this is the step:
1. Take a Free IQ test for teenagers especially.
2. Get the result and check with ” IQ Career list”
3. Target your future favorite career and start to mark your aim.

