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DECISION LAG: In the context of economic policies, a part of the implementation lag involving the time it takes for policy makers to determine the appropriate policy to undertake. Another part of the implementation lag is the action lag. For fiscal policy, this involves Congress and the President debating, passing, and signing legislation that changes government spending or taxes. For monetary policy, this involves a meeting among the members of the Federal Reserve Open Market Committee. The decision lag is usually shorter for monetary policy than fiscal policy.

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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.

     See also | market share | oligopoly | concentration ratio | market control | antitrust laws |


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HERFINDAHL INDEX, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2024. [Accessed: April 20, 2024].


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AVERAGE FACTOR COST AND MARGINAL FACTOR COST

A mathematical connection between average factor cost and marginal factor cost stating that the change in the average factor cost depends on a comparison between average factor cost and marginal factor cost. For perfect competition, with no market control, marginal factor cost is equal to average factor cost, and average factor cost does not change. For monopsony and other firms with market control, marginal factor cost is greater than average factor cost, and average factor cost rises.

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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
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