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AMERICAN ECONOMIC ASSOCIATION: An organization of over 25,000 professional economists. Founded in 1885, this premier top-of-the-economic-association-list publishes the prestigious American Economic Review, arguably THE number one scholarly U.S. economic journal and the Journal of Economic Literature, arguably THE number one index of economic journal publications. The AEA, as acronymically inclined economists call it, also sponsors an annual conference where professional economists present scholarly papers on their latest scholarly research.

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EIGHT-FIRM CONCENTRATION RATIO: The proportion of total output in an industry that's produced by the eight largest firms in the industry. This is one of two common concentration ratios. The other is the four-firm concentration ratio. The eight-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and how market control is held by the eight largest firms in the industry.

     See also | concentration ratio | four-firm concentration ratio | market share | market control | oligopoly | monopolistic competition |


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GAINS FROM TRADE

The combination of consumer surplus and producer surplus obtained by buyers and sellers when engaging in a market exchange. Gains from trade arise because buyers are typically willing and able to pay a higher price to purchase a good than what they end up paying and because sellers are typically willing and able to accept a lower price to sell a good than what they end up receiving. Both sides of the market exchange are thus better off, have a net gain in welfare, by making the trade. While all types of market exchanges generate gains from trade, this topic is perhaps most important for an understanding of international trade.

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