What is IQ? What is intelligence?

In science, the term intelligence typically refers to what we could call academic or cognitive intelligence. In their book on intelligence, professors Resing and Drenth (2007)* answer the question 'What is intelligence?' using the following definition: "The whole of cognitive or intellectual abilities required to obtain knowledge, and to use that knowledge in a good way to solve problems that have a well described goal and structure."

In ordinary language, one could say that intelligence refers to how smart or clever you are.

What is IQ?

IQ is an acronym for Intelligence Quotient. So what is IQ? The IQ is a measurement of your intelligence and is expressed in a number.

A person's IQ can be calculated by having the person take an intelligence test. The average IQ is 100. If you achieve a score higher than 100, you are smarter than the average person, and a lower score means you are (somewhat) less smart.

Does the latter apply to you? Don't despair, read Increasing your IQ and multiple intelligences. You can also take a free IQ test, or read the article on the history of the IQ test.

* Resing, W., & Drenth, P. (2007). Intelligence: knowing and measuring. Amsterdam: Publisher Nieuwezijds