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Earnings Mobility and Origin Dependence: What can twins say together with nonparametric econometrics?


Author Info

  • Nilsson, William

    (Department of Economics, Umeå University)


This study focuses on earnings immobility and its relation to the originin terms of both the social background and the initial position in the earnings distribution. Twin data is used to reveal the importance for the common background for immobility. A nonparametric technique is used to study if the immobility varies over the distribution. The results indicate strong immobility, an important effect of the background, and that these effects vary over the distribution. For the male monozygotic sample, the social background accounts for 71-88 percent of the immobility in deciles 3 to 7, where the background is found to be most important. The common background has its strongest impact in deciles 6 to 10 for the female sample, where these effects accounts for 66-77 percent of the immobility. Comparing results for monozygotic and dizygotic twins also indicate that genes play an important role in income immobility.

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Bibliographic Info

Paper provided by Umeå University, Department of Economics in its series Umeå Economic Studies with number 716.

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Length: 21 pages
Date of creation: 24 Sep 2007
Date of revision:
Handle: RePEc:hhs:umnees:0716

Contact details of provider:
Postal: Department of Economics, Umeå University, S-901 87 Umeå, Sweden
Phone: 090 - 786 61 42
Fax: 090 - 77 23 02
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Keywords: Earnings mobility; nonparametric; twins;

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