Why are some people smarter than others, even though out brains are all relatively the same in shape and size?

Answer 1

Brains are NOT all of the same size. Brain size is hereditary, and there's a correlation - a very well known correlation that includes, but is not limited to, our species - between intelligence and brain-to-body size ratio.

Brain size is a race-related variable. Black Africans average about 1350 cubic centimeters of brain volume. Whites average about 1500 cubic centimeters. Most of the size difference occurs in the cerebrum, where abstract thought is believed to occur.

The heritable difference in brain size explains the observed differences in IQ and scholastic achievement. No environmental factor is necessary to account for intelligence differences. And, in fact, no environmental factor does account for intelligence differences. Poverty? Nope. Whites from the poorest socioeconomic status (SES) groups usually out-perform Blacks from the highest SES groups.

Although environment probably does play a role in developing intelligence, the limiting factor is heredity. Recently published psychology texts assert that the heritable part of the variance in intelligence is only 40%. That's a politically correct lie. The true value is closer to 80%, leaving only 20% for environmental factors to play with.

paprica0 made a mistake in her otherwise correct answer. What she said about synaptic connections forming because of practice or experience is true. But the increase in the number of synapse links is LEARNING; it isn't intelligence. Intelligence (the potential for learning) is correlated with THE EXTENT TO WHICH a person is able to develop those links. People who are able, with practice, to develop them in relative abundance are smarter, in general, than people who can only develop fewer links, no matter how much they practice. Everybody gets at least a little better at a mental job that they do repeatedly, but some people can take practice to higher levels than others can.

Answer 2

But the design of every brain is unique like thumb-prints, certain parts of our brain are more concentrated then others, some people have weak memory that makes them come-off as stupid, and then of course there is what you learn and how much your work out your brain, because though the size is the same, the amount of information is endless, it's like a big box, you don't neccesarily have to fill it up, but you can, and some people fill their boxes up more, then there is also the natural atrophy that occurs when it isn't being worked out, the fact that all our brains our the same size only means that we are CAPABLE to be as smart as each other, some people drop out of highschool and don't get a good education, others study hard and go to harvard. The size of the brain doesn't determine how smart you are, it determines how smart you can be. Hope I helped.

Answer 3

Not only does environment play a huge role (parents, education, etc), but scientists have recently discovered 2 genes in humans that not all humans share. These two genes are associated with intelligence. One of the genes about 70% of the population has, and the other, I believe about 30% of the population share. I think these genes appeared around the time of first written language and then spoken language. Of course, environment can be a powerful enough factor to either negate the benefits of having these genes (born smart, bad environment, now not so smart), or negate the fact of not having them (you could be smart and successful without these genes given appropriate environmental supports).

Someone out there probably has a reference or citation to this research, but I've seen it a few times in the NY Times and other publications.

Answer 4

i've got continually theory it became humorous whilst men made ignorant jokes regarding the "looseness" of a female's vagina. The vagina is like an elastic. Even after childbirth, the version interior the vagina is so small that no guy might actually be able to be conscious. If maximum men can't tell if a female is faking an orgasm, then there is not any risk in hell that he may be able to discover the minuscule transformations that happen after giving start. i think of that is purely something men got here up with because of the fact women people could make jokes regarding the dimensions of guys's penises. the lads needed something to snigger approximately too.

Answer 5

A lot of things. The short answer - most brain growth and development happens before the age of six.

Children with a healthier diet get better development, and those with a more stimulating environment also do better - the best predictor of school success is the wealth of the parents.

People are different. Some people have ADHD, autism, bipolar disorder, schizophrenia or other disorders. They have an impairment of some form.

Answer 6

Because they have made more connections in their brains. The more you use the brain, the more connections are formed in the brain. The synaps go faster and the person becomes smarter. Kinda like fueling an engine.

Answer 7

In reality you may think some people are smarter then other but tecnecly that is false. Lets say some one is a very good at math. The person is good with numbers, but that dosen't make you smart. Lets say another person may suck at math but is a great artist, the math guy is't any more smarter then artist becuse the art guy is smarter in a diffrent way.

Answer 8

Hi. Whales have the largest brains on the planet. Makes you wonder, no?

Answer 9

This is the reason why parents should read to their little toddlers at night.

Answer 10

Because education,upbrining, influences and environment are all variable for each individual.most of us have the same capacity to learn,but there are many variable factors that determine exactly how much we do learn.