I focused on anxiety/depression in Anglo countries. But @sapien_labs cast a broader net and finds much more extensive psychiatric harm linked to phone-based childhoods, globally. Earlier phone = lower mental health as young adult

What was the route by which early phone-ownership disrupted development? Biggest by far was younger age of entry to social media. Sure, its correlational, but how about--until we're sure what's happening--no smartphones before 14, no social media before 16? Abstract: