Intelligence testing has become a major force in our society; any changes in how the test is measured will have many consequences. Intelligence tests should be updated at regular intervals. Measured IQ is increasing at 0.3 points per year. This makes a case for updating the tests. This is why most companies that produce intelligence tests a doing some updating.
The updating of these tests has consequences for a society that depends on these tests. Many decisions made in our educational system are dependent on these tests. Intelligence tests determine whether a student is put into an advanced class or a class for mentally handicapped students. A child may not be able for a special education class one year but in the next year with an updated test may become eligible even though their ability remained the same. How a person is treated in the criminal justice system is also effected. A person being tried as being mentally retarded is treated differently than a person with a normal IQ. How a person scores on an IQ test may even determine whether they could be executed.
There is also what is known as the plateau effect. This is the idea that as intelligence will at some time reach a plateau and level off. The premise is that as when the optimal environment is reached the rise in intelligence will stop.
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