Contents:
- Medical Video: Does The Size Of Your Brain Matter?
- Is brain size related to human intelligence?
- Researchers have different opinions
- Brain size can be reduced by genes
- Conclusion
Medical Video: Does The Size Of Your Brain Matter?
He said, people who have a larger brain size means smarter. Not infrequently, many people judge the size of a person's brain from the width of his forehead. For example, if someone has a forehead that is "jenong" or wide, it must be said to be a smart person. The human brain is basically different, but is it true that the size of the human brain is an indicator of one's intelligence? See the explanation below.
Is brain size related to human intelligence?
A study published in the Journal of Neuroscience and Biobehavioral Reviews states that having a large brain is no guarantee for someone to have a high IQ. Today IQ is still one of the instruments used to measure one's abilities rationally.
Researchers from Austria, the Netherlands and Germany compared the results of IQ tests and related them to IQ of participants. Brain size was measured using the brain imaging method during several studies. The result, of 148 studies involving more than 8,000 people found a weak relationship between the size of the brain with a person's level of intelligence.
From the collection of studies observed, it was seen that brain volume only played a small role in the performance of IQ tests in humans. Although there are certain things that can indeed be observed, the relationship of brain volume with intelligence is very small.
The structure and integrity of the brain has a more important role in the biological foundation of a person's level of intelligence.The researchers found that men tended to have a larger brain size than women, but overall there was no difference in the level of intelligence based on a person's gender or gender.
Researchers have different opinions
If in previous studies researchers found brain volume only played a small role in human IQ, other studies did not think so. The reason, scientists who have examined the relationship of the brain with intelligence have different answers, not infrequently this raises a debate that has not found a definite point. So, the answer to the statement about the influence of brain size on a person's intelligence is in fact dependent on the scientist we ask.
Anthropologists use the interior volume of the skull and compare it to body size to roughly estimate intelligence, a measurement known as encephalization quotients. Although the study is not yet perfect, it has shown that if a person's brain size is large, he has a high IQ.
Michael McDaniel, an industrial psychologist and organization at Virginia Commonwealth University, has claimed that a bigger brain does make people smarter. Many researchers, however, do not agree with McDaniel's conclusions. His research, published in 2005 in the journal Intelligence, shows that in all age groups and sexes, brain volume is related to one's intelligence.
Brain size can be reduced by genes
In studies conducted on identical twins (having the same gene) and fraternal twins (having half the same genes), there was a greater relationship in brain size with identical twins. The researchers also found that if the relationship between intelligence and the amount of gray matter in the frontal lobe - which is controlled by genetic factors, the results showed that parents reduced intelligence to their children.
So, different brain sizes may be due to genes at birth and environmental factors that also play a role in brain development.
Albert Einstein might be an easy example if brain size is not an indicator that makes someone smart. Because Einstein's brain is not much larger than the average human brain - has a normal brain. But there are certain parts of his brain that are more instrumental so that they can influence global mathematical thinking.
Scientists have also discovered that there are strange things that could increase the size of the human brain, for example the brains of taxi drivers in London grow and change as they study difficult routes. Those taxi drivers who have been navigating the streets for years have significant structural changes in parts of their brains, especially in parts posterior hippocampus bigger and hippocampus front is a little smaller.
Conclusion
One thing agreed upon by scientists, if brain size cannot be equated with one's intelligence. Instead, scientists see brain mass against body mass to make speculations about the cognitive abilities of each creature.
Basically a person's intelligence increases because of the habit of the brain in learning things and there are parts in the brain that are more instrumental so that it affects a person's ability, for example Einstein.
