Aug 10, 2025 · What Is an Externality? An externality occurs when an activity by one party causes a cost or benefit to another party. These effects can be either negative or positive.

The concept of externality was first developed by Alfred Marshall in the 1890s [1] and achieved broader attention in the works of economist Arthur Pigou in the 1920s. [2] The prototypical example of a …

Externalities occur when producing or consuming a good cause an impact on third parties not directly related to the transaction. Externalities can either be positive or negative. They can also occur from …

What is an Externality? An externality is a cost or benefit of an economic activity experienced by an unrelated third party. The external cost or benefit is not reflected in the final cost or benefit of a good …

Some argue that wealth itself has an externality: inflaming envy. Others maintain that there are externalities of altruism—when I give money to help the poor, everyone else who cares about the …

Externalities are positive or negative indirect outcomes caused by production or consumption activities. Every day, millions of production and consumption activities are taking place. The producers and …

positive externality, in economics, a benefit received or transferred to a party as an indirect effect of the transactions of another party. Positive externalities arise when one party, such as a business, makes …

1 day ago · What Is an Externality? An externality is a cost or benefit that is caused by one party but financially incurred or received by another. Externalities can be negative or positive. A negative …

EXTERNALITY definition: 1. a positive or negative effect for someone else as a result of something that you do: 2. the…. Learn more.

Consumption, production, and investment decisions of individuals, households, and firms often affect people not directly involved in the transactions. Sometimes these indirect effects are tiny. But when …