The multiple demand network helps people focus their attention, juggle several things in memory at the same time, and solve difficult problems like those involving math.

And while this network is not fully developed in kids, the study showed it operated similarly as it does in adults, said Zeynep Saygin, senior author of the study and assistant professor of psychology at The Ohio State University.

The study involved adults and 4- to 12-year-old children whose brains were scanned in an fMRI while they tried to complete a difficult task.

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