What Is The IQ Full Form: IQ Meaning, Definition and Importance of IQ in Psychology and Beyond

IQ Full Form

Do you know what is the IQ Full Form? IQ is an abbreviation of intelligence. The full form of IQ is Intelligence Quotient. IQ is a way to specify an individual’s intelligence. There are many types to examine an individual’s IQ and these differ in all organizations.

However, it should always be kept in mind that the parameters only reflect the relative intelligence of the individual. There is no guarantee that the result will be accurate.

The Explanation of Intelligence Quotient

The Intelligence Quotient is an extension of the IQ Full Form. This result is based on a sequence of standardized tests or subtests meant to gauge a person’s level of intellect. He coined the term “intelligent quotient” for a scoring system for IQ tests at the University of Breslau in a book that was published in 1912.

IQs might change depending on the situation. There are several ways to measure IQ. The results of an IQ test indicate a person’s level of general intelligence. One of the numerous standardized test designs for acquiring human knowledge can be used to gauge a person’s IQ. IQ100 can be used to define a standardized IQ sample. The 15 IQ points serve as the upper and lower bounds for the deviations. Two-thirds of the population, according to the poll, have an IQ between 85 and 115. Only 5% of persons receive a score of 125.

The History of IQ Full Form

Some of the first researchers to consider evaluating intelligence were Sir Francis Galton (1822–1911) and Paul Broca (1824–1880). They believed that the size of the human skull might be used to assess intellect. They believed that intelligence was correlated with head size. Wilhelm Wundt (1932–1920), a physicist, employed introspection—the capacity for a person to reflect upon his or her own thoughts—as a gauge of intelligence around the same period. These researchers have been tasked by the French Ministry of Education with creating assessments that will help distinguish between mentally ill children and youngsters who are typically intelligent but lethargic.

The Simon Binet IQ test was the end outcome. This IQ exam includes a variety of sections, including item identification, rhyming word searches, and inference.

The results of the IQ test reveal details on the child’s intellectual growth. By multiplying (mental age/chronological age) by 100, the IQ was determined. This was quite successful.

William Stern, a psychologist, is the author of the phrase “Intelligence Quotient,” (IQ Full Form) which has its full meaning. It is a translation of the German phrase Intelligenzquotient. Alfred Binet and Theophile Simon published the first IQ test in 1905. Since then, various organizations have produced a variety of IQ tests.

Importance of IQ

There are many important ways to measure intelligence. Some of them are as follows:

  • It helps to understand the reasoning ability of the individual.
  • Understanding how effectively a person can utilize facts and reasoning to provide answers and develop predictions is useful.
  • The information can also be used to understand a person’s ability to respond to their environment.
  • This assists in developing an idea about the memory of the candidate.
  • These exams assist the teachers in determining which candidates require more attention.
  • Various companies also use these examinations to choose their personnel.

Advantages of IQ Testing

Intelligence Quotient tests have distinct advantages because they are:

  • It helps teachers and parents to recognize special needs students
  • It helps parents to improve the cognitive skills of their children
  • It permits students to focus on intellectual skills
  • It helps a candidate choose a suitable field for their career
  • It helps teachers and parents to improve children’s problem areas

Disadvantages of IQ Testing

IQ tests have several drawbacks because they constrain people’s conceptions of intellect and are unable to assess every circumstance. The only skills that the IQ tests look at are verbal and mathematical.

Although the tests have many advantages, there are some disadvantages as well. Test results are extremely relative:

  • You may face difficulties in drawing any conclusion from the examination.
  • Candidates who are perceived to have “learning difficulties” often have fewer responsibilities at school. This leaves candidates behind their peers.

What is the formula of IQ?

The formula of IQ is, IQ=MA/CA×100. Where CA means Chromological Age and MA means Mental Age.

Intelligence Quotient (IQ) = MA/CA×100

How to calculate IQ level?

The IQ of a person is given by the formula, IQ=MA/CA ×100, where MA is the mental age and CA is the chromological age. If MA is 16.8 for a 12-year child, find the IQ level for this child.

IQ= 16.8/12*100

IQ= 1.4*100

IQ= 140

How to calculate MA or CA in the IQ formula?

The IQ of a person is given by the formula,

IQ= mc × 100, where m is the mental age and c is the chromological age. If 80 ≤ IQ ≤ 140 for a group of 12-year children, find the range of their mental age.


When CA = 12, we have IQ =MA/12 × 100 = 25MA/3

∴ 80 ≤ IQ ≤ 140 ⇒ 80 ≤ 25MA/3 ≤ 140

⇒ 80 ≤ 25MA/3 and 25 MA/3 ≤ 140

⇒3/25 × 80 ≤ MA and MA ≤ 140 × 3/25

⇒ 48/5 ≤ MA and MA ≤ 84/5

⇒ 9.6 ≤ MA ≤ 16.8

Therefore, the required mental age for the 12-year-old group is 9.6 years or more and 16.8 years or less.

IQ Full Form

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  • December 25, 2023