There's some evidence that rability to distinguish subtle facial cues that show, say, the difference between fear and sadness comes from spending a lot of time as a kid looking at people face to face. So i would like to know, do kids who spend a huge amount of time in front of screens never develop those capacities? Is there a critical period where, if you don't develop them young, it becomes very hard to develop them later on? I'm sure there's a point at which it becomes problematic. As we get older, o just have to talk to parents of teens, and even to the teens themselves, ad they'll tell you, i am less happy because i have access