In the examples cited by Robert Cialdini and Steve Martin,

Last updated: 7/27/2022

In the examples cited by Robert Cialdini and Steve Martin, when servers provided mints to their customers as they gave them the bill, the difference in tips from giving one mint versus two mints, jumped from 3 percent to percent of the bill. a. 5 b. 14 c. 6 d. 10