History of IQ tests

The history of IQ testing is an interesting one and dates back thousands of years ago. The first intelligence test began thousands of years ago with Sir Francis Galton, who between the years 1884 and 1890 ran a service in which people could pay a little fee before they check their intelligence. Although Sir Francis intelligent testing method was flawed, it however set the pace for intelligence testing. Soon after his intelligence testing, several other testing methods were developed by psychologists and this continues to the present time, making IQ tests history a very interesting one.

The French and History of IQ Tests

A very interesting milestone was made in then IQ tests history during the early 1900s as the French government asked the psychologist Alfred Binet to help decide the French students who are likely to experience difficulty in schools. This follows a law passed by the French government making school attendance compulsory for all children and therefore Albert Binet was to determine those who need special assistance. Binet and Theodore Simon, his colleague went to work and developed the first IQ test by setting questions that are not ordinarily taught in the conventional schools. They noticed that some younger students answered questions beyond their ages while some others could not.

This developed into the Binet-Simon scale which became the basis of intelligence testing in the world today. Of course, a lot of other IQ tests have been developed since the Alfred Binet and his colleague first developed the Binet-Simon scale, but these other IQ tests are simply more or less derivatives of the work done by Binet-Simon.

The Stanford – Binet Test

Yet, another remarkable progress in the history of IQ tests is the Stanford-Binet test. The development of this test took place shortly after the development of the Binet-Simon scale. After the development, the test came into the United States and the U.S psychologist, Lewis Terman, of the Stanford University took the Binet-Simon test and standardized it. In addition, he expressed the test result in a single number known as IQ (Intelligent Quotient) and the first standardized test was published in 1916.

In this form of intelligence testing, a number of factors are taken into consideration, these include the individual’s mental age and chronological age as determined in the IQ answers. In this test, the score is simply calculated by dividing the individual’s mental age by his chronological age and multiplying by 100%. 100 percent is multiplied to get rid of a decimal point in the calculation. If you are 20 years old and you scored a mental age of 30, your IQ score will be 30/20 x 100 which is equal to 150.

History of IQ tests after World War I

The World War I made yet another remarkable mark in the history of IQ tests. Robert M. Yerkes and his group of psychologists offered to help the United States Army screen recruits by using their tests. This led them to develop two kinds of exams for testing various groups of people and these include the following:

  • Army Alpha exam was developed to be used in testing intelligence on literate and English speaking recruits.
  • Army Beta exam was developed to be used in testing intelligence on non-English speaking and illiterate recruits.

These tests were unlike most other IQ tests as they were not administered individually but collectively and also the tests involved items like short-answer and practical problems , practical judgments, arithmetic problems, puzzles, pattern recognition, tests of general knowledge and so forth. The test was a remarkable milestone in the history of IQ test.

Intelligence Testing in the Modern Time

A lot of standards for intelligence testing have been developed in the modern time. Over the internet, you can find different kinds and types of intelligence testing and most of these tests no longer calculate the score by using the old IQ formula but simply generate score by considering the extent to which a person’s performance differs from the average performance of people in the same age bracket.

Some of the well known modern intelligence testing includes the Wechsler Intelligence Scale for Children (WISC), the Wechsler Adult Intelligence Scale (WAIS) and so forth. You can find a lot of IQ tests online; some of the IQ tests online are free but some are not. It is easy to determine your IQ score today and these scores generally reflect your intellectual prowess and capability. People with high IQ scores have exceptionally high intellectual prowess and ability.

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