When Apple fanatics lined up to get the new iPhone in 2011, the New York Times published an op-ed titled “You Love Your iPhone. Literally.” It described an unpublished experiment in which the author scanned the brains of 16 people as they heard and watched audio and video of ringing or vibrating iPhones. The scans showed activity in the insular cortex—an area that activates when someone experiences love. “Subjects’ brains responded…as they would respond to the presence or proximity of a girlfriend, boyfriend, or family member,” the author wrote. “They loved their iPhones.”

A version of this article appeared in the July–August 2013 issue of Harvard Business Review.