4.19.2018
How does the brain work?
4.12.2018
New Book: Attack of the Teenage Brain
Marvel at the neuroscientific reasons why smart teens make dumb decisions! Behold the mind-controlling power of executive function! Thrill to a vision of a better school for the teenage brain!
The new book, Attack of the Teenage Brain, is an enlightening and entertaining listen that will change the way you think about teen behavior and prompt you to consider how else parents, educators, and policymakers might collaborate to help our challenging, sometimes infuriating, often weird, and genuinely wonderful kids become more successful learners, in school and beyond.

2.22.2018
Mom’s beef stew: Five ingredients of intelligence
- The desire to explore
- Self-control
- Creativity
- Verbal communication
- Interpreting nonverbal communication
- An unusual ability to associate. They could see connections not obvious to others
- An annoying habit of constantly asking “what if.” And “why not” and “how come you’re doing it this way.”
- An unquenchable desire to tinker and experiment.
12.13.2017
Exercise boosts brain power.
2.19.2015
How does the brain work?
How does the brain work? We have no idea. We are still in the very beginning stages of understanding most of the basics. From a researcher's perspective, it's a very exciting time to be a scientist, because you get to rummage around on the ground floor. But from an overall perspective, most of it is spooky.
Let me give you some examples of how little we know about how the brain works. We know that you use the left-side of your brain for speech. Under normal circumstances, if you get a stroke on the left side of your brain, your speech can be greatly affected. Depending upon where you got the stroke, it could affect your ability to speak language or your ability to understand language.
There is a little six year old who suffered from something Sturge-Weber syndrome, a catastrophic brain disease. Because he had this disorder, the little guy had to have his entire left hemisphere removed. No left hemisphere, no language. That should have completely destroyed his language ability. Right?
Wrong!
Within two years, the little guy had regained his language abilities entirely. The right side of his brain seemed to have noticed there was a deficit and simply rewired itself to take over talking. Do we understand this?
We do not.
We do not understand how you learn a language of any kind. We don't know how you know how to walk. We don't know how you know how to read. You have a complete map of your body in your head. Actually, you have several maps of your body in your head. Some of them tell you where you are, some of them tell you how to move. One even tells you how to see. We don't know how they coordinate their information. We don't know how it knows its you - and what, if anything, YOU are. Consciousness remains a slippery fish as ever.
So you ask me how the brain works. I am happy to repeat my answer. We have no idea.
Visit brainrules.net to learn about the 12 things we know about how the brain works. These are the Brain Rules.
1.12.2015
Theory of Mind
Theory of Mind is about as close to mind-reading as people can get. Most formal definitions go along the lines of the ability to discern the intentions, and motivations of yourself or another person. To develop a Theory of their Mind, hence the term. I think it has two components to it, especially if you're talking about one person trying to understand another's behavioral space.
7.17.2014
Why we should all take a nap in the afternoon
Why we should all take a nap in the afternoon
Watch the video
It turns out we need a nap during the afternoon. And historically, it seems we've always needed one. There is the Spanish concept of siesta. Italians call it riposo. If you go to China, you are likely many businesses shut down between 11:30 - 2:00 pm. They take a combination lunch and siesta before going back to work. Americans used to call it a power nap, but the research world calls this a nap zone.
The research world calls this the nap zone. Other benefits have been found, mostly related to changes in memory performance. Both declarative and procedural memory tasks improve if you take a regular nap. One paper has the delightful title - and remember, this is a research paper "Good sleep, bad sleep! The role of daytime naps in healthy adults.
I have personal experience with this, and I bet you do too. When I don't take a nap in the mid-afternoon, I typically fight being drowsy from about 1:30 on. If I do take a nap in the mid-afternoon, just a small one, I suddenly get a burst of energy and an alertness that allows me to be productive the entire day. I am pleased to say this anecdotal information has strong empirical support.
Get the updated and expanded edition of John Medina's NYT bestseller Brain Rules
6.08.2014
Brain Rules for Baby: Updated and Expanded!
Brain Rules for Baby has grown! The book now features a chapter on the science of sleep -- the No. 1 question parents ask Dr. Medina.
sleepy baby - new chapter
"How do I get my baby to sleep through the night?"
John Medina introduces the new sleep chapter: video
A note from John Medina
I was hesitant, I admit, about adding a sleep chapter to Brain Rules for Baby. The science about getting your child to go to sleep is fairly wobbly.But you keep asking me about it. Whenever I lecture, whenever you write me, the question “How do I get my child to go to sleep?” keeps reappearing like a public-television fund-raiser.
I do understand your need for junior to get regular sleep. I know one couple who decided not to have any more children because of the toll their first-born’s sleep habits took on their marriage. The issue can’t get much more important than that.
So I get it. Here is your chapter.
Besides, the professor in me can’t help but want to show you how weak-kneed science can be when it’s yoked to real-world problems. Infant sleep is a terrific illustration of science’s strengths and limitations.
In the Sleepy Baby chapter, you will discover two powerful, opposing ideas about how to get your baby to go to sleep. They’re not mutually exclusive, but they don’t tolerate each other very well. Which one you end up believing depends more on personal preference than peer review. It would be nice if the data were better behaved, but they’re not.
I do provide a solution, however. If you are having trouble getting your child to go to sleep, you will find this chapter useful. And if it solves your problem, feelings of love for your child will once again expand in your heart, like a second Big Bang. That’s the most compelling reason for me to add a new chapter on sleep.
Get the book!
eBook (PDF)
Brain Rules for Baby Audiobook
Just want the sleep chapter? Get it here.
Each ebook comes in PDF format, which you can send to your Kindle or other reading device.
Become a fan of Brain Rules for Baby on Facebook.
P.S. Zero to Five by Tracy Cutchlow is due June 17th!

