We're always going to back research like this. Apparently pizza is good for productivity!
As Munchies points out, a study published in psychologist Dan Ariely's book, Payoff: The Hidden Logic That Shapes Our Motivations, found that the promise of pizza at the end of the week can have a sizable impact on productivity.
Ariely's study took place at a semiconductor factory in Israel. There, a group of workers were sent one of three messages at the beginning of the work week: one that promised pizza if they performed well, another that promised a compliment from the boss, or lastly, a text that promised a cash bonus. A quarter of participants got no message and therefore no incentive.
At the end of the week, pizza was found to be the highest motivator, increasing productivity by an amazing 6.7 per cent.
The next highest motivator was the promise of a compliment from their boss. Interestingly, the cash bonus came in last — although, to be fair, it was only $30.
So take this research as an excuse to pressure your boss into some free pizza!