According to Daniel Pocock’s talk at DebConf17’s Open Day, hearing a ping from your messaging or e-mail app or seeing a visual notification of a new unread message has an equivalent effect on your ability to concentrate as

  • a 10 point drop in your IQ; or

  • drinking a glass of wine.

This effect is probably at least somewhat mitigated by reading the message, but that is a context switch, and we all know what those do to your concentration. So if you want to get anything done, be sure to turn off notifications.

[citation needed]. That’s a suspiciously round number. IQ measures ability to do IQ tests, and not much else. And isn’t a glass of wine pretty much the Balmer peak? :P
Comment by jgh Fri Aug 18 21:15:56 2017