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FACTOR MARKET, EFFICIENCY: A factor market achieves efficiency in the allocation of resources by equating marginal revenue product to factor price. Perfect competition, as the efficiency benchmark, is the only market structure to satisfy this criterion and achieve factor market efficiency. Monopsony, oligopsony, and monopsonistic competition are inefficient because they equate marginal revenue product to marginal factor cost, both of which are greater than factor price.

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CONSUMPTION RIVALRY

Whether or not the consumption of a particular good by one person prevents simultaneous consumption by another person. In other words, does consumption impose an opportunity cost on others. Rival consumption occurs if the consumption by one imposes an opportunity cost on others because others are prevented from consuming the good. Nonrival consumption occurs if the consumption by one does not impose an opportunity cost on others because others are not prevented from consuming the good. When combined with nonpayer excludability, the result is four alternative types of goods -- private, public, common-property, and near-public.

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BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time watching the shopping channel trying to buy either a New York Yankees baseball cap or several magazines on home repairs. Be on the lookout for malfunctioning pocket calculators.
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Before 1933, the U.S. dime was legal as payment only in transactions of $10 or less.
"The will to win is important, but the will to prepare is vital. "

-- Joe Paterno, football coach

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