Bartenders often put their own money in their tip jars at the beginning of the evening to give the impression to customers that others have tipped them.This is an example of impression management.

This statement is true. Bartenders may put their own money in the tip jar at the beginning of the evening to create the impression that others have already tipped them, with the hope that customers will feel more inclined to tip as well. This is a tactic of impression management, or the control of information and behavior to create a desired impression.