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MARGINAL REVENUE, MONOPOLISTIC COMPETITION: The change in total revenue received by a monopolistically competitive firm resulting from a change in the quantity of output sold. For a monopolistically competitive firm, marginal revenue is less than the price.
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BARRIERS TO ENTRY Institutional, government, technological, or economic restrictions on the entry of participants into a market or industry. The four primary barriers to entry are: (1) resource ownership, (2) patents and copyrights, (3) government restrictions, and (2) start-up cost. Barriers to entry are a key reason for market control and the inefficiency that results. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club seeking to buy either a how-to book on surfing the Internet or a computer that can play music and burn CDs. Be on the lookout for slightly overweight pizza delivery guys.
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This isn't me! What am I?
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
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"A people that values its privileges above its principles soon loses both. " -- Dwight Eisenhower, 34th US president
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JPE
Journal of Political Economy
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