Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Externalities are the incidental effects that the activities or actions of one party have on another party. Positive externalities occur when the actions of a person or entity have a positive impact ...

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 ...

An externality is a cost or benefit related to the production or consumption of a good or service that affects third parties unrelated to the production or consumption. It is generally the unintended, ...

Many economic models are constructed on the basis of an equity-efficiency trade-off, assuming that equality comes at the cost of efficiency. This column argues that inequality is better understood as ...