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What is the full form of IQ

IQ: Intelligence Quotient

IQ stands for Intelligence Quotient. It is a parameter that is used to identify the intelligence of a person. These parameters can vary from situation to situation.

There are several methods to test the IQ of a person. Actually, IQ is a scorecard. A score or number derived from the IQ test shows the relative intelligence of a person. You can calculate the IQ of a person from one of the several standardized tests design to access human intelligence.

The norming sample of IQ is defined as IQ 100. The up and down deviation is defined 15 IQ points. According to a survey, two-third of the population scores between IQ 85 and IQ 115. Only 5 percent of the population scores above 125.

IQ full form


The term IQ was first given by Psychologist William Stern. It is derived from the German term intelligenz-quotient. The first intelligence test was introduced in 1905 by Alfred Binet and Theophile Simon.

IQ is generally calculated by taking the ratio of mental age to chronological age and multiplying it by 100. For example: The IQ of a 10 year old body with mental age of 14 will be 14/10 * 100 = 140.


The IQ scores are used for educational placement, evaluating job applicants, assessment of intellectual disability, research and advancement of human intelligence etc.

Some schools organize an intelligence test to get the IQ level of the students before admitting them into their school. This is used to judge that either the student is capable to get admitted in a particular class or not.

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