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IQ testing

Definition

IQ (intelligence quotient) testing is a series of exams used to determine your general intelligence in relation to other people the same age.

Alternative Names

Intelligence testing

Information

Many IQ tests are used today. Whether they measure actual intelligence or simply certain abilities is controversial. IQ tests measure a specific functioning ability and may not accurately assess your talents or future potential. Results of any intelligence test may be culturally biased.

The Wechsler test and the Stanford-Binet Intelligence Scales (SC) are the most standardized and widely used exams. Average test results range from 90 - 110:

  • A score below 70 indicates intellectual disability.
  • A person who scores 130 or higher is usually considered gifted, although different programs set different levels for this classification.
  • A person with a score of 145 - 160 is usually classified as highly advanced or very gifted.
  • A person with a score of 165 or higher is usually classified a genius.

References

Stebbins GT. Neuropsychological Testing. In: Goetz, CG. Textbook of Clinical Neurology. 3rd ed. St. Louis, Mo: WB Saunders; 2007: chap 27.


Review Date: 11/12/2012
Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.
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