Cyberpsychologist Dr Mary Aiken warns of the risk to human development posed by our obsession with cyberspace. Millions of babies round the world deprived of eye contact and proper attention, because their parents are distracted by their smartphones, could cause "an evolutionary blip".
"We cannot stand by passively and watch the cyber social experiment play out. In human terms to wait is to allow for the worst outcomes, many of which are unfolding before our eyes."

Recorded at the Hay Festival.

Presenter: Helen Zaltzman
Producer: Sheila Cook.