NBER Retirement Research Center Paper No. NB 07-02
Issued in December 2007
---- Acknowledgements -----
We thank Andrew Biggs, Steve Goss, Jeff Liebman, Andrew Samwick and participants in the 2007 NBER Summer Institute Social Security meeting for helpful comments. This research was supported by the U.S. Social Security Administration through grant #10-P-98363-1-04 to the National Bureau of Economic Research as part of the SSA Retirement Research Consortium. The findings and conclusions expressed are solely those of the author(s) and do not represent the views of SSA, any agency of the Federal Government, or the NBER. The authors also acknowledge research support from the Pension Research Council of the Wharton School at the University of Pennsylvania. Opinions and errors are solely those of the authors and not of the institutions with whom the authors are affiliated.