Modeling Fishermen's Utility in the Weevokil Model

Modeling the Plantation Owner's Payoff in the Weevokil Model

Modeling Preferences in an Externality Scenario

In an economic model, a plantation's production of a good generates pollution that negatively affects the profits of a nearby fishery. The well-being (utility) for both the plantation owner and the fishermen is assumed to be based entirely on their net monetary profits. Why is the assumption of quasi-linear preferences—where utility is the sum of a monetary component and a component dependent on the quantity of the good produced—a justifiable choice for this model?

Justification of Utility Representation in Externality Models

In an economic model where a plantation's production of a good imposes a cost on a nearby fishery, the assumption of quasi-linear preferences for the parties involved is justified because it implies that their overall satisfaction (utility) is completely independent of their monetary income.

Deconstructing Utility in an Externality Model

In an economic model analyzing the conflict between a banana plantation (whose output is Q) and a nearby fishery, both parties' well-being is tied to their net profits. Match each component of the model to its correct description or justification.

An economist is modeling the negative externality between a paper mill and a downstream fishery. The mill's pollution harms the fishery's profits. The economist assumes that the well-being (utility) of both the mill owner and the fishery owner is determined solely by their net monetary profits. A key result of this model is that the marginal cost of the pollution damage is constant and does not depend on the initial wealth of either party. Which modeling assumption is directly responsible for this specific analytical simplification?

In an economic model where a factory's production (Q) creates a negative externality for a local community, analysts often assume the community's utility can be represented by a quasi-linear function. This function separates utility into a component that depends on the factory's output and a component that does not. This modeling choice is most defensible when the harm caused by the externality can be directly and fully captured as a change in the community's net ______ profits or income.

An economic model analyzes the negative externality between a chemical plant and a nearby residential community. The model justifies using quasi-linear preferences for the community by assuming their well-being (utility) is based entirely on their net monetary outcomes. In which of the following situations would this modeling assumption be the LEAST justifiable?

Evaluating a Utility Function in an Externality Model