New research presented by neuroscientists at the University of North Carolina at Chapel Hill found young adolescents who habitually checked social media showed a distinct neurodevelopmental trajectory within the brain.Their sensitivity toward social rewards and punishments from peers heightened over time in comparison with those who engaged in moderate or low checking behaviors. The three-year study of 169 sixth- and seventh-grade students from three public middle schools in rural North Carolina was published Tuesday in the journal JAMA Pediatrics.The authors used functional magnetic resonance imaging (MRI) from recruits who were between the ages of 12 and 15. HOW TO AVOID BEING DUPED…