Regardless of whether it helps to know it, researchers recently determined that this sing-songy baby talk — more technically known as “parentese” — seems to be nearly universal to humans around the world. In the most wide-ranging study of its kind, more than 40 scientists helped to gather and analyze 1,615 voice recordings from 410 parents on six continents, in 18 languages from diverse communities: rural and urban, isolated and cosmopolitan, internet savvy and off the grid, from hunter gatherers in Tanzania to urban dwellers in Beijing.

The results, published recently in the journal Nature Human Behavior, showed that in every one of these cultures, the way parents spoke and sang to their infants differed from the way they communicated with adults — and that those differences were profoundly similar from group to group.

“We tend to speak in this higher pitch, high variability, like, ‘Ohh, heeelloo, you’re a baaybee!’” said Courtney Hilton, a psychologist at Haskins Laboratories at Yale University and a principal author of the study. Cody Moser, a graduate student studying cognitive science at the University of California, Merced, and the other principal author, added: “When people tend to produce lullabies or tend to talk to their infants, they tend to do so in the same way.”