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The Effect of Social Security on Private Savings: The Time Series Evidence


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  • Martin Feldstein


This paper reviews the studies by Robert Barro, Michael Darby, and Alicia Munnell, as well as my own earlier time-series study and presents new estimates using the revised national income-account data. The basic estimates of each of the four studies point to an economically substantial effect that is very unlikely to have been observed by chance alone. Although including variables like the Government surplus (Barro) or a measure of real money balance (Darby) can lower the estimated coefficient of the social security wealth variable, this paper explains their inappropriateness in the aggregate consumption function. Use of new data on national income and its components from the Department of Commerce improves my earlier estimates and shows that the unemployment variable does not belong in the consumption function once the level of income and its rate of change are included.

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Bibliographic Info

Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 0314.

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Date of creation: Feb 1979
Date of revision:
Handle: RePEc:nbr:nberwo:0314

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