Tipping is an important phenomenon, both because of its economic magnitude and because of the insights it suggests about economic behavior in general. It is closely related to several areas in economics, including labor economics, industrial organization, social economics, behavioral economics,...

Tipping is a multi-billion-dollar phenomenon that standard economic models find hard to explain. I discuss several aspects of tipping and divide tipping to six different categories: reward-tipping, price- tipping, tipping-in-advance, bribery-tipping, holiday-tipping and gift- tipping, and...

The paper presents a model of the evolution of social norms. When a norm is costly to follow and people do not derive benefits from following it except for avoiding social disapproval, the norm erodes over time. Tip percentages, however, increased over the years, suggesting that people derive...

Several economists have maintained that social and internalized norms can enforce cooperation in public good situations. This experimental study investigates impacts of social and internalized norms for cooperation among strangers in a public good game. The experiment has two treatment effects....