/ Smartphones Content for 完美体育 en /curiosity/news/new-uc-davis-research-suggests-parents-should-limit-screen-media-preschoolers <p>New research from University of California, Davis, suggests that parents should delay introducing their children to any screen media, as well as limit preschool-age children鈥檚 use of mobile devices, including smartphones and tablets.</p> March 31, 2020 - 6:00am Karen Michele Nikos /curiosity/news/new-uc-davis-research-suggests-parents-should-limit-screen-media-preschoolers