These Are the Ages When You’re Smartest at Everything (Don’t Worry—It’s Not Downhill After 30)

Age 11: Learning a new language

If you want your kids to be bilingual, better start them young. A landmark 1975 study found that 11-year-old English kids learned French better than their younger peers. Scholars disagree on the exact best age to pick up a new language; some say it gets harder after age seven, while others argue any time before puberty isn’t too late. But all agree on one thing: Kids are better at learning a new language than adults. By adulthood, you know your native language so well that it’s harder to train your brain away from it. Have your kids learn these three languages to guarantee success when they grow up.