A commenter on the Atlantic article put me on to this from the New York Times Sunday Review: Your Phone vs. Your Heart, by leading social psychology scholar Barbara L. Fredrickson. No Montessori mention, but a lively, science-y piece suggesting that our absorption in screens and virtual interactions crowds out face-to-face interactions with proven health benefits and positive feedback loops. I’ll give away her last sentence so you’ll go read the whole thing:
Friends don’t let friends lose their capacity for humanity.