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HERFINDAHL INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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BUSINESS CYCLE PHASES

The recurring, but irregular, pattern of business cycles can be divided into two basic phases--expansion and contraction. An expansion is a period of increasing economic activity and a contraction is a period of declining economic activity. These two phases are marked by two transitions. The transition from expansion to contraction is termed a peak and the transition from contraction to expansion is termed a trough. The early portion of an expansion is often referred to as a recovery.

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ORANGE REBELOON
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Today, you are likely to spend a great deal of time wandering around the shopping mall trying to buy either decorative picture frames or storage boxes for your income tax returns. Be on the lookout for the last item on a shelf.
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Woodrow Wilson's portrait adorned the $100,000 bill that was removed from circulation in 1929. Woodrow Wilson was removed from circulation in 1924.
"No man, for any considerable time, can wear one face to himself and another to the multitude without finally getting bewildered as to which may be true."

-- Nathanial Hawthorne, Author

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Journal of Financial Economics
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