The authors attempt to clarify the concepts of, and the link between, fixed costs and sunk costs. They argue that the root for possible confusion between fixed costs and sunk costs is the inconsistency in defining the term fixed costs. They define fixed costs uniformly as the costs that are...

The author presents a classroom version of the popular research game called the Ultimatum Game. Researchers are placing growing importance on how fairness affects behavior, and this experiment provides a useful, fun, and engaging way in which a day or two of class time can be spent on the topic....

Most people learn to drive without knowing how the engine works. In a similar vein, the author believes that students can learn economics without knowing the algebra and calculus underlying the results. If instructors follow the philosophy of other economics courses in using graphs to illustrate...

The authors reply to Colander’s comment in this issue on their earlier article (Wang and Yang 2001). They emphasize the necessity to define fixed cost differently than sunk cost because fixed vs. variable costs and sunk vs. avoidable costs classify the total costs from two different...