Your Phone Is Almost Out of Battery. Remain Calm. Call A Doctor.

You’re probably suffering from low-battery anxiety. It could be worse, you could have full-blown ‘nomophobia’

Larry Rosen knows he has a problem. Headed home from work, the psychology professor said his heart skipped a beat when he glanced at his iPhone and suddenly realized his battery was at 7%. He had no charger. “You get this feeling: Oh my God, I’m lost,” he said.

Prof. Rosen, a past chairman of the psychology department at California State University, Dominguez Hills, knows whereof he speaks. He is a leading researcher in a new field of scientific inquiry that is attracting dozens of researchers across the globe and is increasingly...