For example, babies watching television or movies tend to be confused when broadcast sound is even slightly out of sync.

Video-chat technologies, then, have major implications for how humans perceive key relationships.

While interfaces like Skype, Face Time, and Google Hangout are still relatively new, this area of research builds on decades of experiments involving children and electronic screens.

“Because they can’t really talk and so there’s no back-and-forth ...

The baby may be nodding and communicating, but there’s no way for the person on the other end to see that they’re responding.

Not only are they using [this technology], but they use it a lot.”And not only that—these chats were surprisingly long, often lasting for 20 minutes or more.

And many parents of young children reported using video chat with their kids even though the kids weren’t allowed to watch television.

“Given the plethora of screens and uses for those screens that we have now, I think that we have to be a little sanguine about how much we can extrapolate,” he said.

Of course, babies being babies, it’s hard to know what they’re thinking just by watching how they act.

Researchers have found that toddlers are more comforted by their mothers via video chat than they are through audio alone.

And video chat appears to be, conceptually, much easier for babies to grasp than a phone conversation.“It turns out that babies are really bad with phones,” Barr said.

“Just saying something like, ‘The internet’s not working,’” Barr said.