NBER Retirement Research Center Paper No. NB 13-05
Issued in November 2013
---- Acknowledgements -----
This research was supported by a grant from the U.S. Social Security Administration (SSA) as part of the Retirement Research Consortium (RRC). The findings and conclusions are solely those of the author[s] and do not represent the views of SSA, any agency of the Federal Government, the NBER Retirement Research Center, UCLA, or Duke University.