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by liber8 5176 days ago
It's interesting to think about what intelligence really means. In some ways, this has been frequently discussed (ie multiple types of intelligence) and in other ways it seems that this has never been discussed (ie what are we actually talking about when we call someone intelligent?) Is intelligence the ability to learn something quickly? Is it the ability to understand something quickly? Is it the ability to solve a particular type of problem quickly?

Depending on what we mean, "Can you make yourself smarter?" has fairly obvious answers.

Start by looking at children. In one regard, we rarely learn faster than when we are kids. Everything is foreign to us, and we are constantly learning, our brains little sponges in a wet world. But clearly, our 25-year old selves could solve far more complex problems than our 6-year old selves. Did we get smarter between 6 and 25?

In the same vein, think about how severely retarded people are described: "He has the mind of a 4 year old." Whether that description is medically accurate or not isn't the point. We certainly think of children as intellectually inferior, even though all of our brains started out that way.

So what changed? Why is a 25 year old "more intelligent" than a 6 year old? Is it the creation of new neural pathways? Is it simply the way they've learned to look at the world or quickly apply answers and processes they already know to fit new problems?

Maybe you can provide more answers? Because it seems to me that the fact that we got to where we are today indicates that you can absolutely make yourself more intelligent, depending on how you define that. But I'm open to objections.

1 comments

Yes, you certainly did get smarter between 6 and 25. Children's brains are still developing until late puberty. All sorts of cognitive tasks show development, including short term memory, working memory, etc... It's absolutely not just factual learning taht is happening.
Agreed (and studies show that brains are developing until at least 18, possibly into early 20's).

But why? Most people seem to think that this rapid development is, for the most part, genetically driven. Doesn't it seem strange to reach this conclusion when we don't even have a solid idea about what "intelligence" really means (other than "performs above X level on some cognitive test")?

>But why?

For the same reason that people grow taller until they're in their late teens and get stronger until they're in their early 20's.

>Most people seem to think that this rapid development is, for the most part, genetically driven.

It is. Depending on which studies you cherry-pick, the heritability of intelligence is somewhere between 0.5 and 0.8. The best way to be smart is to choose your parents.

>Doesn't it seem strange to reach this conclusion when we don't even have a solid idea about what "intelligence" really means (other than "performs above X level on some cognitive test")?

People can argue about the definition of strength just as easily. Who is the strongest person in the world? Is it whoever can bench-press the most weight? What about leg press? Clean-and-jerk? Maybe some average of these measures? Maybe we want to factor the person's weight in as well. While "strength" doesn't always have a precise definition, it's usually pretty easy for us to tell weak people from strong ones. It's the same when people talk about intelligence. The precise definition varies, but there are lots of correlating ways to measure it.