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Lesson Summary. In summary, IQ stands for intelligence quotient, which is your cognitive abilities, relative to what others can do of different ages. The concept of IQ was invented in the year 1904 by Alfred Binet. The equation used to calculate a person's IQ score is Mental Age / Chronological Age x 100.
If a five year old took his test, and had the mental age of a three year old, then the school would work harder with him to raise his intelligence. Louis Terman, a Stanford professor, brought this idea to the United States and created the Stanford-Binet IQ test.IQ stands for intelligence quotient.A person's IQ score is computed by dividing a person's mental age by their chronological age and multiplying by 100. So if a 7 year old takes an IQ test and scores the mental age of a 7 year old; 7/7=1 times 100= an IQ of 100.Thus an average IQ would be 100.f a five year old took his test, and had the mental age of a three year old, then the school would work harder with him to raise his intelligence. Louis Terman, a Stanford professor, brought this idea to the United States and created the Stanford-Binet IQ test.