Leaders | Nutrition and cognition

How to raise the world’s IQ

Simple ways to make the next generation more intelligent

An image of a globe in the shape of a brain, cast in gold, against a pink background.
image: Ricardo Rey

People today are much cleverer than they were in previous generations. A study of 72 countries found that average IQs rose by 2.2 points a decade between 1948 and 2020. This stunning change is known as the “Flynn effect” after James Flynn, the scientist who first noticed it. Flynn was initially baffled by his discovery. It took millions of years for the brain to evolve. How could it improve so rapidly over just a few decades?

This article appeared in the Leaders section of the print edition under the headline “How to raise the world’s IQ”

From the July 13th 2024 edition

Discover stories from this section and more in the list of contents

Explore the edition

Discover more

This illustration shows an open book with a yellow background. The left page has a green leaf, a bold "n," text, and a declining graph. Small figures on the right turn a blank page, one holding a large yellow pen.

Lessons from the failure of Northvolt

Governments blew billions on a battery champion. Time to welcome foreign investors instead

How to make a success of peace talks with Vladimir Putin

The key is robust security guarantees for Ukrainians


Black and white photograph of Javier Milei

Javier Milei: “My contempt for the state is infinite”

Argentina’s president is idolised by the Trumpian right. They should get to know him better


Tariff threats will do harm, even if Donald Trump does not impose them

The risk of a trade war is uncomfortably high

Peace in Lebanon is just a start

Donald Trump must build on Joe Biden’s belated success

From Nixon to China, to Trump to Tehran

Iran is weak. For America’s next president that creates an opportunity