2Carroll,Christopher D.,Robert E.Hall,Stephen,P..The Buffer-Stock Theory of Saving: Some Macroeconomic Evidence[J].Brookings Pa- pers on Economic Activity,1992,(2):61-156.
3Engen,Eric M., Gruber,J..Unemployment Insurance and Precautionary Saving[R].NBER Working Paper,1995,(NO.5252):1-50.
4Hubbard, Skinner and Zeldes. Precautionary Saving and Social In- surance[J].Journal of Political Economy, 1995,103(2):360-399.
5Page, Ben.Social Security and Private Saving:A Review of the Empirical Evidence [Z]. Congressional Budget Office , Unpulished Manuscript, 1998.
6Melvin Stephens JR.. The Impact of the 1972 Social Security Ben- efit Increase on Household Consumpt ion [R] . NBER Working Pa- per,2005,(NO.095):1-21.