We now know that those iPads, smartphones and Xboxes are a form of digital drug. Recent brain imaging research is showing that they affect the brain’s frontal cortex — which controls executive functioning, including impulse control — in exactly the same way that cocaine does. Technology is so hyper-arousing that it raises dopamine levels — the feel-good neurotransmitter most involved in the addiction dynamic — as much as sex.

This addictive effect is why Dr. Peter Whybrow, director of neuroscience at UCLA, calls screens “electronic cocaine” and Chinese researchers call them “digital heroin.” In fact, Dr. Andrew Doan, the head of addiction research for the Pentagon and the US Navy — who has been researching video game addiction — calls video games and screen technologies “digital pharmakeia” (Greek for drug).