Из статьи на HBR:
Recent neuroscientific research is starting to help us understand why we behave as we do with our modern information systems. Humans brains, it turns out, are built to privilege new information over just about anything else (including, some studiessuggest, food and sex). The promise of that new information, spurred by, say, pressing the refresh button in your email, or the ding of a Twitter DM alert, triggers the release of a neurotransmitter—dopamine—in the brain. Dopamine makes us more alert to the promise of potential pleasure, and our brains are wired to seek out things that generate dopamine.
There is a learning loop to this process—new information + dopamine = pleasure—that lays down neural pathways that “teach” your brain that there is a reward for pressing the email refresh button (even if that reward is nothing but another message from Dave from accounting)