A Senate committee is widening its investigation into the impact social media platforms have on children, teens and young adults, with more apps facing congressional scrutiny. William Brangham reports with Jean Twenge, a psychology professor and author of "iGen: Why Today's Super-Connected Kids Are Growing Up Less Rebellious, More Tolerant, Less Happy — and Completely Unprepared for Adulthood."

Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG
Find more from PBS NewsHour at https://www.pbs.org/newshour
Subscribe to our YouTube channel: https://bit.ly/2HfsCD6

Follow us:
Facebook: http://www.pbs.org/newshour
Twitter: http://www.twitter.com/newshour
Instagram: http://www.instagram.com/newshour

Subscribe:
PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts
Newsletters: https://www.pbs.org/newshour/subscribe