GREENSBORO, North Carolina, July 18 -- The University of North Carolina Greensboro campus issued the following news: * * * Is Screen Time Safe for Preschoolers? A UNCG Developmental Psychologist's Take Google "screen time for preschoolers," and you will be hit with an onslaught of articles about behavioral problems, ADHD, or learning difficulties. Search a parenting forum for advice, and you will get an eyeful of anecdotes and admonitions. Parents may have read the American Academy of Pediatr  more