Powerful new longitudinal study finds that adolescents who increase their social media over a 2 year period show lower cognitive performance, compared to those who did not increase. Fom @jasonmnagata's team, using ABCD data, and controlling for all the right stuff.

The jury in Los Angeles will soon return its verdict on whether social media is addictive. Meta's own researchers said it is. See this quote, and many others, in my new review paper laying out 7 lines of evidence: https://t.co/n6RfRkXbeW https://t.co/F2KubzNIIT
Join us today at 3pm EDT for a zoom discussion of links between social media and happiness. We'll discuss today's World Happiness Report and what we can learn from it about regional variation in well-being and social media use. Via...