May 2014, Games and Economic Behavior
- A substantial amount of single users tip and the tendency to tip is positively correlated with effort.
- The users have three typical types: myopic, strategic and reciprocal and the decision of tipping has significant gap among the three.
- The tendency to tip increases with the frequency of use.
- The tip rate of frequent users in their last question is higher than the tip rate of single users.
- Effort choices depend on past behavior of the user.