Writer and parent Joanna Schroeder wrote a guide for parents about what to look out for and how to intervene.This episode of Today, Explained was produced by Avishay Artsy, edited by Matt Collette, fact-checked by Laura Bullard, engineered by Paul Mounsey, and hosted by Sean Rameswaram.Transcript at vox.com/todayexplained  Support Today, Explained by making a financial contribution to Vox! bit.ly/givepodcastsLearn more about your ad choices. Visit podcastchoices.com/adchoices