How You Can Make Your Brain Smarter Every Day

If you’re old enough, you may remember a time, maybe back in your childhood, when someone measured your intelligence and assigned a number to it. I suspect that you have been either proud of that “IQ,” or perhaps a little bit chagrined about it, from that day to this. The general belief back then was that intelligence was a genetic endowment, along with eye color or a propensity for baldness.

We now know this is simply not true. Your brain — every brain — is a work in progress. It is “plastic.” From the day we’re born to the day we die, it continuously revises and remodels, improving or slowly declining, as a function of how we use it. If a brain is exercised properly, anyone can grow intelligence, at any age, and potentially by a lot. Or you can just let your brain idle — and watch it slowly, inexorably, go to seed like a sedentary body.

Decision-making is Still a Work in Progress for Teenagers

Recent studies of brain development in teenagers may finally give parents the scientific authority to say “No you’re not!” in answer to the common adolescent complaint, “But I’m old enough to make my own decisions!” That authority comes from brain imaging studies that reveal some surprising features of the adolescent brain. Deborah Yurgelun-Todd and colleagues…