miércoles, 11 de marzo de 2009

¿Qué es una Depresión?

En un Post Anterior, ¿Vamos a una Depresión?, comenté sobre la definición de esta variable y la percepción de Barro sobre las probabilidades de este evento, basado en un estudio que realizón. Para complementar ese post, agrego hoy este nuevo en donde

1. Les proporciono la referencia del trabajo de Barro
STOCK-MARKET CRASHES AND DEPRESSIONS
Robert J. Barro, José F. Ursúa
Working Paper 14760
NATIONAL BUREAU OF ECONOMIC RESEARCH
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2, En Calculated Risk se presenta una discusión sobre este concepto, en donde señala ....
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Q1 2009 is estimated at a -7.0% decline in real GDP (Seasonally adjusted annual rate). This will push the cumulative decline (peak to trough) to about 3.4%.Even though the current recession is already one of the worst since 1947, it is only about 1/3 of the way to a depression (assuming a terrible Q1).
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3. A diferencia de una recesión, el NBER no clasifica el concepto de depresión de manera separada.... la siguiente es una nota tomada del NBER
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Q: Does the NBER identify depressions as well as recessions in its chronology?
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A: The NBER does not separately identify depressions. The NBER business cycle chronology identifies the dates of peaks and troughs in economic activity. We refer to the period between a peak and a trough as a contraction or a recession, and the period between the trough and the peak as an expansion. The term depression is often used to refer to a particularly severe period of economic weakness. Some economists use it to refer only to the portion of these periods when economic activity is declining. The more common use, however, also encompasses the time until economic activity has returned to close to normal levels. The most recent episode in the United States that is generally regarded as a depression occurred in the 1930s. The NBER determined that the peak in economic activity occurred in August 1929, and the trough in March 1933. The NBER identified a second peak in May 1937 and a trough in June 1938. Both the contraction starting in 1929 and that starting in 1937 were very severe; the one starting in 1929 is widely acknowledged to have been the worst in U.S. history. According to the Bureau of Economic Analysis, real GDP declined 27 percent between 1929 and 1933, roughly ten times as much as in the worst postwar recession. If the term Great Depression is used to mean the period of exceptional decline in economic activity, it refers to the period from August 1929 to March 1933. If it is used to also include the period until economic activity had returned to approximately normal levels, most economists would judge that it ended sometime in 1940 or 1941. However, just as the NBER does not define the term depression or identify depressions, there is no formal NBER definition or dating of the Great Depression.
Ojala sea útil este material!!!!!

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