AdvertisementSleep Training Truths: What Science Can (And Can't) Tell Us About Crying It OutJuly 15, 2019Michaeleen DouclefffacebookEmailTaking care of a newborn can be relentless and at some point, many parents need the baby to sleep — alone and quietly — for a few hours. So what does science say about the controversial practice of sleep training? (Scott Bakal for NPR)