Does a Bigger Brain Make You Smarter? Created by: Rahul

With grade 6, the pressure of studies starts mounting - With tons of formatives and summatives every week! And after all the hard work some students score a 2 while others score a 4. This Makes you wonder why? Do some kids have bigger Brian? Do brighter Brains lead to more smartness ? Do some people use more of their Brain ? What is the secret to smartness?

How Does Our Brain Work

So does a bigger brain make you smarter? Let's start with understanding the different parts of the brain. There are three major parts in our brain, the cerebrum, the cerebellum, and the brain stem. The cerebrum is the biggest and it is the most known ,because it has the twisted mass of grey matter. It also is very complicated because it it is divided into 2 halves which are called hemispheres. There are different areas or lobes which are parts of the brain in the cerebrum, for example the frontal lobe where your planning and action planning happen. Hemispheres are what make a left and a right side of the brain and different things happen in different hemispheres, for example in the in the left one is where you learn a language and do math. The right hemisphere is where your creativity is. Under the cerebrum is the limbic system and that is where your feelings are controlled. Inside the limbic system is the thalamus which passes Information from your body to the right place in your brain. There is also the hypothalamus in the limbic system which controls your body temperature and food intake, and so without the hypothalamus you will never feel full. Below the the cerebrum is the cerebellum which is what coordinates your bodies movements. Then the last part is the brain stem which monitors all the little functions your body makes like your heart beat, breathing, and blood pressure.

Researchers from Wonderopolis stated “This all makes sense when you consider the importance of the brain to human life. Even though the brain only makes up 3-5% of the body's weight, it uses up an incredible 20% of the body's resources in terms of oxygen and glucose.” This quote explains that even though the brain is small

According to Brain Pop “ The more you know about the brain the easier it gets to compare intelligence” This quote is explaining how it is easier to learn why other People are animals are smarter than each other.

The parts of your brain (diagram)

How much of our brain do we use?

So how much of your brain do you actually use? If you've ever believed in the myth where you only use 10% of your brain, you might be surprised to learn that human beings use every part of their brain. Over the course of an average day, humans use nearly 100% of their brain. Researchers from Stanford University who have studied the brain with magnetic resonance imaging ( MRI ) technology have found that there are no dormant parts of the brain. In fact, most of your brain is active almost all of the time. But what would happen if you do not use 100% of your brain? Most of the time you do not use 100% of your brain it is okay because it is just slightly less like 0.1-1% less but if you are not using enough of your brain then you need to see a doctor because if you do not use enough of your brain you can lose your sight or hearing or memory. Using to little would most likely occur due to a brain tumor or disease which both can be fatal or have permanent damage.

Why People are Smarter Than Others?

If everyone uses 100% of their brain then why are some people smarter than others? Scientists suggest that a big brain alone doesn't make you smart. If it did, elephants and sperm whales would be the smartest creatures ever . Rather, scientists look at brain mass to body mass ratio in order to make any speculation about a creature's cognitive abilities. The reason for this is the parts where their conscious thinking occurs are really small compared to ours and that is not only for whales but for more animals. Also for body to brain ratio humans are at the top because humans have the best brain to body ratio because our brain is the best size it can be for our body. But then why are some people smarter than others? A good example for this is Albert Einstein because Albert Einstein had the average size brain for an adult, but then why isn’t everyone as smart as Albert Einstein? It is because his brain was likely highly integrated so that 7 paths would have connected distant places to one another.

A a neurologist from Stanford University states that “So, although having a big brain is somewhat predictive of having big smarts, intelligence probably depends much more on how efficiently different parts of your brain communicate with each other.” This quote explains the paragraph simply in one statement and it is by a trustworthy person.

Animal species with visual brain vs body ratio and brain weight
Albert Einstein vs Average adult Human

Why Does This All Matter

This topic matters a lot because most people think that having a small brain makes you dumb which is wrong, but they do not know it and so they have made such a wide used term called “ pea brain” which means you have a small brain so you are dumb.

So having a big brain does not mean you are smart, but having highly integrated parts in your brain means you are. Since we all use 100% of our brain it is not that you use more or less, it is just that some people's brain parts work together faster. So next time you have a test just challenge yourself and practice a lot and you will have a guaranteed 4!



Integrated: connected

Cognitive: Somethings learning abilities

magnetic resonance imaging: it is a type of CT scan

conscious: aware of and responding to one's surroundings

dormant : having an function suspended or slowed down

Neurologist: A scientist that studies the brain

Tumor: a swelling of a part of the body caused by an abnormal growth of tissue

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