IQ Full Form Name: IQ Meaning

Full Form of IQ :

Intelligence Quotient

IQ Full Form is Intelligence Quotient. IQ refers to a single or several standard tests which determine the relative intelligence of an individual through a measure. In simple terms, IQ is the measure of intelligence of an individual expressed in number. It was the great psychologist William Stem who coined the term IQ. Currently, the IQ tests have 100 as the reference score. Anyone who scores more than 100 is said to have more IQ than an average individual. Similarly, anyone who scores less than hundred is relatively said to have less or very less IQ based on the score. Thus, there are certain standard derivations of IQ expected according to the age. There are variations in IQ tests based on various aspects of human intelligence namely; spatial ability, memory, mathematical, language ability, and more.

IQ Full Form – Additional Information

It is perhaps one of the most valuable phrases in human vocabulary, considering the volume of relevance attached to it. So, what is Intelligence Quotient? Intelligence Quotient, which will hereinafter be referred to as IQ throughout the article, is essentially the sum score obtained from a series of standardized tests developed for the assessment of human intelligence. The Psychologist named William Stern is the one who coined the now fashionable term IQ inspired from a German term called Intelligenzquotient. When the present IQ tests are created, the raw score is placed at IQ 100 and scores in each standard deviation (abbreviated as SD) down or up are characterized as 15 points less or greater. This was not historically done though.

Tests have revealed that two-thirds of human population would generally score in between the range of IQ 85 and IQ 115. Only about five percent of the total population would manage a score above IQ125. IQ scores are important as they associate with determining factors such as mortality and morbidity, parental social status, and to a great degree, even biological parental IQ. Heritability of IQ is a great debate among scientists and test formulators despite centuries of research conducted on it across the globe.

While IQ scores indicate the quality of cognitive ability of a human, they matter a lot in educational field where they are often taken into consideration for the analysis of intellectual disability, if any, and suitability of applicants to the job. IQ scores are not absolutely conclusive on the cognitive ability as there can be possibilities of high score in tests and yet relatively lower cognitive ability in reality. Such tests do not necessarily make improvements in one’s cognitive skills such as attention, speed, and memory.

Lately, there has been what the scientific community calls the Flynn effect, in which there has been substantial increase the IQ scores. This has been subject to extensive research. Seemingly, IQ is a complicated aspect of human intelligence and that is why it interests scientific community immensely. It is therefore important that more aspects of the same be dealt so as to better know what this whole IQ system talks about. SO, here are five points about IQ that should interest everyone:

Forerunners of the modern-day IQ test

History is witness to several IQ tests formulated and implemented, briefly or for longer period, in various civilizations and later countries. In earlier times, prevalent social and economic norms and notions heavily influenced IQ tests, which often contributed to the palpable inaccuracies in such tests. With time, more objective tests emerged that attempted to assess human intelligence more accurately than ever before.

The first attempt to formulate a standardized IQ test was made by an English Statistician named Francis Galton. His understanding on human intelligence was that heredity was a major influencing factor. In the year 1882, he established the first-ever mental testing center and published a book titled Inquiries into Human Faculty and Its Development in the year 1883. He could not, however, prove much of his claims on human intelligence and IQ and eventually gave up on his research altogether.

In the year 1905, a group of French scientists comprising Theodore Simon, Victor Henri, and Alfred Binet published a test called The Binet-Simon test, which laid emphasis upon verbal abilities. The aim of the test was to determine mental retardation among school children. Eventually, Lewis Terman from the Stanford University made modifications to the Binet-Simon test, which eventually became the Stanford-Binet Intelligence Scales in the year 1916. The test remained one of the most popular IQ tests in the United States of America for many years.

Current IQ tests

The most popularly used IQ tests currently are the Wechsler Adult Intelligence Scale, which is applicable to adults, and the other one is the Wechsler Intelligence Scale for Children, which is for young kids. There are other IQ tests such as the Cognitive Assessment System, The Differential Ability Scales, the Kaufman Assessment battery for Children, etc.

The following are some of the commonly used IQ tests for adults:

  • Reynolds Intelligence Assessment Scales
  • Multidimensional Aptitude Battery II
  • Cattell Culture Fair III
  • Raven’s Progressive Matrices
  • Woodcock-Johnson Tests of Cognitive Abilities

Al the aforementioned tests are extensively used in the English-speaking world however, there are different standardized tests formulated in several non-English Speaking countries. Nevertheless, the most prominent ones have been already mentioned above.

Differential Item Functioning

Under this head, we shall talk about one important aspect of IQ tests. Differential Item Functioning (abbreviated as DIF) is basically a phenomenon that occurs when participants in the test come from different groups such as age, sex, or race, etc possessing same latent abilities and giving different answers to particular questions asked on the same test. Through DIF, an analysis is made on several aspects of human functioning and responses. Through DIF, such questions are generally removed from the test in order to place every participant at equal footing in the test. One of the most commonly implemented methods of assessing DIFs is Item Response Theory (abbreviated as IRT), Mantel-Haenszel, and the Logistic Regression.

Reliability and Validity of IQ tests

There may be certain disagreements regarding the validity of IQ tests however, a substantial population of psychometricians consider IQ tests as possessing high degree of statistical reliability. Like every other statistical qualities, there exists a standard error that helps in measuring uncertainty about the IQ estimate. For modern IQ tests, three points is the standard error of measurement. Thus, as far as the current mood of the scientific community is concerned, IQ tests enjoy great reliability and importance.

High IQ societies

These societies have been making a lot of buzz lately with several high IQ admissions they have been witnessing. These societies provide memberships to those individuals who have IQ scores higher than the 98 percentile or any other equivalent. For that matter, Mensa International is the most famous of all. The society with maximum 99.9 percentile score is the Triple Nine Society.

Popular Full Forms of IQ :

The abbreviation IQ has different full forms. And these IQ full forms are used in different fields. Mentioned below is the comprehensive list of various possible full forms of IQ along with their fields of application.

IQ Full FormField of Application
Intelligence QuotientUsed to talk about Human Attributes
Image QualityUsed in Photography Field
IraQIt is a Country located in Western Asia
Interesting QuotationInternet Slang used in social media
Intelligent QuestionInternet Slang used in social media
Ignorant QuestionInternet Slang used in social media
Imagination QuotientUsed to talk about Human Attributes
Internal QueryUsed in Criminal Investigation Departments
Ignite QuicklyUsed in Military/Defense areas
Interview QuestionGeneral term used in public domain
Ion QualityUsed to denote a Chemical Property
Insurance QuoteUsed in Insurance Sectors
Intelligent QueenUsed in the game of Chess
Installation QualificationUsed in Science field
In QuestionUsed in Law/Legal field
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