The Trick That Boosted Waiter Tips by 23%

This study explains how to manipulate people (empty their purses) with limited resources. Waiters in a restaurant were divided into three groups: 1) Waiters/waitresses giving a single mint with the check, and also no mention of the mint itself. This increased tips by around 3% against the control group. 2) Servers bringing out two mints by hand (separate from the check). In addition, they mentioned them to the table ( i.e. "Would anyone like some mints?"). This saw tips increase by ~14% against the control group. 3) The last group had waiters bring out the check first along with a pair of mints. A short time afterwards, the waiter came back with another set of mints, and let customers know that they had brought out more mints, in case they wanted another. This last group saw the increase of 23% against the control group.