Vandenbroucke, Guillaume (2012): Optimal fertility during World War I.
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During World War I (1914–1918) the birth rates of countries such as France, Germany, the U.K., Belgium and Italy declined by almost 50 percent. In France, where the population was 40 millions in 1914, the deficit of births is estimated to 1.36 millions over 4 years while military losses are estimated at 1.4 millions. In short, the fertility decline doubled the demographic impact of the war. Why did fertility decline so much? The conventional wisdom is that fertility fell below its optimal level because of the absence of men gone to war. I challenge this view using the case of France. I construct a model of optimal fertility choice where a household in its childbearing years during the war faces a partially- compensated loss of its husband’s income, and an increased probability that its wife remains alone after the war. I calibrate the model’s parameters to fit the fertility data over the 100 years before the war, and the probability that a wife remains alone after the war using the casualties sustained by the French army. The model over-predicts the fertility decline by 34% even though it does not feature any physical separations of couples. It also over-predicts the increase in fertility after the war, and generates a temporary increase in the age at birth as observed in the French data.
|Item Type:||MPRA Paper|
|Original Title:||Optimal fertility during World War I|
|Keywords:||Fertility ; war ; growth ; uncertainty|
|Subjects:||J - Labor and Demographic Economics > J1 - Demographic Economics
E - Macroeconomics and Monetary Economics > E1 - General Aggregative Models
N - Economic History > N4 - Government, War, Law, International Relations, and Regulation
|Depositing User:||Guillaume Vandenbroucke|
|Date Deposited:||01. Feb 2012 07:13|
|Last Modified:||23. Feb 2013 22:23|
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Optimal fertility during World War I. (deposited 05. Jan 2012 00:46)
Optimal fertility during World War I. (deposited 27. Jan 2012 09:33)
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