Apparently the broad smile of a waitress can: Tidd and Lockard (1978) found smiling waitresses made more in tips (there's no study on waiters).

Tiddand Lockard(1978)研究发现面带笑意的女服务员(还没有关于男服务员的相关研究)能获得更多的小费。

youdao

Apparently the broad smile of a waitress can: Tidd and Lockard (1978) found smiling waitresses made more in tips (there's no study on waiters).

Tiddand Lockard(1978)研究发现面带笑意的女服务员(还没有关于男服务员的相关研究)能获得更多的小费。

youdao