How Effective Are IQ Tests for Measuring Intelligence

IQ tests have been around for over a century, and they continue to be used in various settings today. While they are often thought of as reliable measures of intelligence, some researchers have raised concerns about the validity of these exams. In this article, we will explore some of the criticism leveled against IQ tests and see how effective they really are when it comes to measuring intelligence.

What is intelligence?

Intelligence is a cognitive ability that allows humans to understand, remember, and solve problems. It encompasses abilities in mathematics, science, and logic as well as in the arts and humanities.

It is classified into three types:

  1. Acute intelligence is the ability to learn and remember quickly.
  2. Permanent intellect is the ability to learn and remember over time.
  3. Operational intelligence is the ability to solve problems and make decisions under pressure.

What are IQ tests used for?

They are scored on a scale from 100 to 145. The higher the number, the smarter the person.

These scores are used to calculate an individual’s intelligence quotient (IQ). A score of 130 or above is generally considered to be average intelligence.

The test was invented in 1916 by Lewis Terman and is currently administered by several organizations, such as the American Psychological Association (APA). The APA has developed several different examinations, which are used to measure intelligence in children and adults.

There are a few factors that can affect an individual’s IQ score. These include:

– Age: An increase in an individual’s age will generally lead to a decrease in their IQ score.

– Education: A person’s level of education will also affect their score. A high school graduate who has been educated in a specific area will have a higher IQ than someone who has only completed elementary school.

– Race: Race can also affect an individual’s IQ score. White people have a higher IQ than black people and Asian people have a higher IQ than Hispanic people.

The Different Types of IQ Tests

Wechsler Intelligence Scale for Children-Revised (WISC-R)

This one is designed to measure intelligence in children aged 3 to 16 years. It has two parts, the first part measures intelligence in broad areas, and the second part measures specific skills.

Wechsler Adult Intelligence Scale (WAIS)

It measures intellect in adults aged 18 to 89 years. It has three parts, the first part measures intellect in broad areas, the second part measures general mental abilities, and the third part measures specific skills.

Stanford-Binet Intelligence Scale for Children-Fourth Edition (SB4)

This examination is used to measure intelligence in children aged 4 to 18 years. It has four parts, the first part measures intelligence in broad areas, the second part measures problem-solving ability, the third part measures perceptual speed, and the fourth part measures comprehension.

Which one is best? There is no definitive answer to this question. Different tests are better than others at measuring different aspects of intelligence and you can check them out at However, all of them have some common features that make them good measures of intellect. For example, all IQ tests are sensitive to changes in a person’s score over time. This means that they are good indicators of a person’s ability to learn and improve over time.

The drawbacks of IQ testing

These exams are based on the idea that intelligence is measured by the number of questions that someone can answer correctly.

But this isn’t always the case. For example, someone who has had experience with a certain topic might be able to answer more questions about that topic than someone who hasn’t had any experience with it.

These tests also don’t take into account other factors that can contribute to intelligence. For example, creativity and intuition are two important factors that aren’t usually measured.

Overall, IQ tests aren’t a good measure of a person’s abilities. They’re based on outdated ideas about intelligence, and they don’t take into account other factors that can contribute to it.

Here are four of the major drawbacks of testing:

1) These tests are not culturally appropriate. As a result, they may not accurately reflect a person’s true intelligence. For example, a person from a Western culture may have a higher score than a person from traditional Asian culture.

2) These tests are not reliable. They can be biased and can provide inaccurate results over time.

3) They do not measure all aspects of intelligence. IQ exams are biased towards certain areas of knowledge, such as mathematics and science.

4) IQ tests do not measure creativity or innovation.

What are the symptoms of low intelligence?

Symptoms may include difficulty concentrating, learning new things, and forming new memories.

Some common signs that a person may have the condition include:

  • Difficulty learning new things
  • Struggling to remember important details
  • Having trouble understanding complex conversations or tasks
  • Having trouble completing complex tasks
  • Frequently losing focus or getting lost in activities
  • Feeling like a “dumb” or “incompetent” person

How to Ace an IQ Test

First and foremost, prepare as thoroughly as possible. Be sure to have all the materials you need, including a calculator and paper and pencil. If you can, practice taking the test a few times before you take it in front of a real examiner.

Next, try to achieve a high score by taking advantage of your natural abilities. If you’re good at math, for example, focus on questions that involve numbers. Likewise, if you’re strong in verbal skills, try to answer questions that involve grammar and vocabulary.

Finally, don’t be discouraged if your score doesn’t reflect your actual intelligence. Many people who are considered unintelligent by mainstream standards score well on IQ tests. In fact, many successful entrepreneurs and scientists have an average or below-average IQ according to standard measures.


Some experts believe that IQ tests do not measure all aspects of intelligence and may be biased against certain groups of people. If you are considering using an IQ test to measure someone’s brainpower, it is important to discuss the results with the person being tested in order to get a more accurate picture.

Ricardo is a freelance writer specialized in politics. He is with from the beginning and helps it grow. Email: richardorland4[at]