I’ve been sitting on this post for a while. Sarah Rose Cavanagh published her book “Hivemind: The New Science of Tribalism in Our Divided World” last year. Sarah is a psychologist at Assumption College who studies human emotions and how these connect to well-being and learning.
Her book is a joy to read, written in a fun and personable — but informative — style. She interviewed several academics and thinkers about their views on human sociality (disclaimer: I’m one of them), and she has some lessons on how to help make modern technology and social media work in our favor. For example: “Use social media for connection…. Dial down the outrage, dial up the empathy.”
Sarah has a good heart and a good head, and I think she’s put together a great book here that can help make the world a little bit better place.
Patrick F. Clarkin, Ph.D. 
As it happens, I have been looking for something to help me make sense of what’s happening today with social media — what’s old and what’s new about — and what the future might have in store. Your recommendation is timely. I have added her book to my shopping list. Thank you!
You’re welcome, Paul. Hope you like it!