Are People with Bigger Heads Really Intelligent?

You may have noticed that some scientists, like Einstein, who are famous for their intelligence, have a larger head than their body. In the 19th and 20th centuries, some scientists from the science of psychology conducted various researches about this observation.

To find the relationship between head size and intelligence requires a bit of a historical journey. The dates we need to go first are the 19th and 20th centuries. These years are still in the present day of science. with primitive methods the years when he tried to progress, or rather crawl.

Paul Broca, Franz Gall, Carl Wernicke Phrenology and craniometry (phrenology and craniometry) was one of the most popular theories in these years when scientists such as scientists were not content with a single field and were interested in both psychology, anthropology and physiology.

In those years, it was enough to measure a person’s head to find out his personality traits and intelligence level.

What you see above is a head size measuring device from 1902. First of all, let me state The theory of phrenology is not a scientifically valid theory today. However, in those years, that is, in the 19th and 20th centuries, the theory that states that it is necessary to measure the size and shape of the brain regions in order to determine the personality traits and intelligence level of a person is the theory of phrenology.

Craniometry, on the other hand, is a technique still used by anthropologists today, unlike phrenology. In this technique, measurements of the size of the brain, weight of the brain and other physical characteristics are measured. But the critical point here is; of this technique It is not used to measure intelligence and determine personality, but only to conduct research on human evolution.

This is how you can measure the size of your head.

head size

Today, head measurement is mostly used to follow the development of babies. health personnel done by. You can still do this with a tape measure that you take to measure the circumference of your own head.

The measurement of the circumference of a person’s head is usually taken above the eyebrows and ears. head size genetic and environmental factors It is thought to be affected by many factors such as

We’re assuming you’ve learned that you shouldn’t rely on intelligence tests you find on the internet.

Intelligence (IQ) is a complex trait that develops with education, consisting of a combination of genetic and environmental factors. Generally; assesses multiple cognitive abilities, such as memory, problem solving, and language skills measured by cognitive ability tests.

These tests have separate training and certifications and certain occupational groups, for example psychologists can apply these tests. The so-called tests on the Internet that show how smart you are in 10 minutes have no validity or reliability.

Let’s take a look at some of the studies examining the correlation between head size and intelligence.

In a meta-analysis study published in 2015 in the journal Neuroscience & Biobehavioral Reviews (that is, in the study that compiled the research published to date), the correlation between the size of the human brain and intelligence was examined. In this study, 88 studies were examined. According to the results of the research, there is a correlation between the size of the head circumference and intelligence. even if there is no relationship There may be a positive relationship between brain size and intelligence.

A similar study was published by Michael A. McDaniel in the journal Intelligence in 2015. In this study brain size and intelligence The relationship between them was examined. Likewise, it was found that the size of the brain volume may have a positive relationship with the level of intelligence.


So both studies show that It doesn’t matter how big your head is, the size of the brain inside matters.. Studies show that the larger the brain size, the higher the intelligence level.

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