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RECOGNITION LAG: In the context of economic policies, the time between a shock to the economy and realization that the shock has occurred. This is one of several policy lags that limit the effectiveness of stabilization policies designed to correct business-cycle fluctuations. This is also one of two inside lags. The other is an implementation lag. Also termed identification lag, the recognition lag emerges due to the time needed to measure economic activity. While the lag is generally positive, it actually can be negative through accurate forecasting techniques. When negative policies can be undertaken to correct a problem before it occurs.
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ARC ELASTICITY The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.
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John Maynard Keynes was born the same year Karl Marx died.
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"A leader is most successful when people barely know he exists. When his work is done, his aim fulfilled, his troops will feel they did it themselves. " -- Lao-Tzu, philosopher
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LTT
Long-Term Trend
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