We all know how easy it is to get hooked on scrolling, but what does this endless activity actually do to our brains? The core mechanism of infinite scrolling is similar to slot machines, explains Matteo Parissi, a registered and chartered forensic psychologist and head of psychology at Cygnet Hospital Harrow in the UK. “Our brain does not know when the next rewarding piece of content will appear, so each swipe while scrolling has the possibility of getting a reward,” he says. “For our brain...