To the test
Take a fast demo IQ test of the Pro Certified Admissions IQ test of the International High IQ Society, or our Classical Intelligence test to get a taste of what a full length IQ test is like.
(Are you here to prepare for an assessment? Check out our Prep Packages.)
When you complete a free IQ test you will get an estimate of your IQ score or the number of questions you answered correctly. Share your IQ score with your friends. Learn if you might qualify for membership of the High IQ society.
Certified
Culture fair intelligence test
| 8 questions, 1 question type |
| Non-verbal, great for non-English natives |
| Compare your IQ with fellow citizens and other countries |
| Professional version (25 questions, $8.99 or |
Classical intelligence test
| 10 questions, 10 question types |
| Verbal, numerical, logical and spatial reasoning |
| Compare your IQ with hundreds of thousands of serious test takers |
| Professional version (44 questions, $8.99) or |
Frequently asked questions
What is an IQ test?
IQ is an abbreviation of Intelligence Quotient. So, OK, but what is IQ? The IQ is a measurement of your intelligence and is expressed in a number. It’s an estimate also, there will always be a given amount of measurement error.
A person’s IQ can be calculated by having the person take an intelligence test. The average IQ is 100 by definition. If you achieve a score higher than 100, you did better than the average person, and a lower score means you (somewhat) performed less.
What is a good IQ score?
The average IQ score is always 100, and your personal score tells you your IQ ranking compared to the average. IQ scores are based on comparisons with other people who took the test: the norm group. As 100 is the average score, your score tells you how your IQ score ranks compared to other people. Most people score between 85 and 115.
About 2% of the population has an IQ score lower than 69. Such a low IQ score often is hard to measure using a regular intelligence test. Very high IQ scores, say over 150, are also hard to determine accurately. This is because you need a lot of reference measurements to determine a specific score reliably. As very high and very low IQ scores simply do not occur often, it is hard to form such a reference group.
Can I practice IQ tests?
You can practice IQ tests, it will not make you more intelligent but it will increase your IQ score on a job test for example. Be sure to try any IQ test we offer for free in our IQ tests section. Especially for assessment preparation this will be very useful!
What IQ test types are there?
In a classic IQ test you will generally find questions related to numerical reasoning, logical reasoning, verbal intelligence and spatial intelligence. An IQ test that primarily measures abstract reasoning, either inductive or deductive, will often be a non-verbal IQ test. The latter is then called culture-fair because of that.
Both classic and non-verbal IQ tests make for valid and reliable IQ score measurements, although their definitions of intelligence do vary. Generally an IQ test consisting of more questions will have a higher reliability than shorter tests.
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IQ tests come in various formats, each designed to measure different aspects of cognitive abilities. The Pro Certified Admissions IQ test by the International High IQ Society and the Classical Intelligence test mentioned in the article cater to assessing intelligence through different question types and lengths. Let's break down the concepts and information touched upon in the text:
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IQ and its Measurement: IQ stands for Intelligence Quotient, representing an individual's intelligence measured by a number. It's an estimate and there's always a margin of error involved. The average IQ is set at 100, with scores above indicating higher intelligence and those below suggesting relatively lower performance.
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Average IQ and Ranges: An average IQ score is 100. Scores between 85 and 115 are most common among the population. About 2% of people score lower than 69, which becomes challenging to measure accurately using standard intelligence tests. Extremely high scores, exceeding 150, are also difficult to precisely determine due to the scarcity of reference measurements.
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IQ Score and Comparison: IQ scores are relative, based on comparisons with others who have taken the test, forming a norm group. Your personal score indicates how you rank compared to this group.
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Practice and IQ Scores: Practicing IQ tests won't increase inherent intelligence but can improve scores on specific job assessments or similar tests. The availability of free IQ tests in the IQ tests section can be particularly useful for assessment preparation.
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Types of IQ Tests: Classic IQ tests generally cover numerical reasoning, logical reasoning, verbal intelligence, and spatial intelligence. Non-verbal IQ tests, often referred to as culture-fair tests, primarily focus on abstract reasoning (inductive or deductive) and do not heavily rely on language. Both types are valid for measuring IQ, but their definitions of intelligence may differ. Longer tests generally offer higher reliability in measuring IQ compared to shorter ones.
These tests aim to provide an estimate of an individual's cognitive abilities and intelligence based on a set of standardized questions. The mentioned Pro Certified Admissions IQ test and Classical Intelligence test each focus on different aspects of intelligence and cater to varying preferences in test-taking styles.
