Paul Krugman shared the 2008 Nobel Memorial Prize in Economic Sciences for his analysis of trade patterns and location of economic activity.
Krugman’s new trade theory explained why countries may trade similar products with one another rather than simply exchanging completely different goods. It emphasized economies of scale, meaning that average costs can fall as production expands, and consumers’ preference for variety. These forces can support trade between countries with similar resources and income levels.
His work also connected trade theory with economic geography. The location of production can be shaped by transport costs, market size, and concentration effects. Krugman shared the 2008 prize with no other laureate. The award recognized his academic contributions, while his later public writing and commentary are separate from the specific research cited by the Nobel committee.