OAKLAND, Calif. (KTVU) - What motivates people to work harder at the office?
According to a new study - it's not cash - but praise and pizza.
A professor at Duke University conducted an experiment on four groups of workers.
One group was promised a $30 bonus at the end of the week. The second group was offered pizza.
The third group was promised a "well done" text message by the boss, and the fourth group was offered nothing.
At the end of the week, the group that got the text message increased productivity the most, closely followed by the pizza group.
The group that received nothing came in third, and the group that got the cash came in last.
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