Making Eye Contact With a Baby Changes Both Your Brain Waves

A new study has found that when adults and babies look at each other, their brain waves sync up. This creates what researchers call "a joint networked state" that facilitates communication between the two of them.

The study, while small—just 17 babies in one experiment and 19 in the other—also found that babies vocalize, or try to communicate, more when this joint networked state is in effect.