Anecdotally, yes. We have some students who are very vocal about how they perceived having a more structured early use of social media once they get to nearing the end of high-school. Having said that, I'll caution that this is hardly any sort of statistical evidence, as its that students who suffered because of it (because of not being ostracized, not part of the cool kids who have phone, etc.) didn't feel bothered to come forward in my work.

The one VERY CLEAR correlation that I see, though, is that families who are EXTREMELY intentional about this fare far better. More than the minutiae of what age they did or didn't give phones, which apps to allow or not, etc., the families that I have seen have lots of success are families who have dedicated time for these conversations and have made them a habit in their family. The ones who I have seen struggle have been of the "set it and forget it" mentality, even the ones who try to just "install an app" that will just do the parenting for them.

thanks