What are the effects of touchscreens on toddler development?

Should you let your toddler use an iPad? Do we know how touchscreen devices affect infants and toddlers? Celeste Cheung is a postdoctoral researcher at Birkbeck University of London and works on the TABLET project, which investigate how 6- to 36-month olds use touchscreen devices, and how these may impact their brain, cognitive and social development. Celeste discusses how preliminary study findings indicate that time spent on a device, as well as the content and context of screen use matter.