TY - JOUR T1 - Social Security Research at the Michigan Retirement Research Center JF - Social Security Bulletin Y1 - 2009 A1 - R.V. Burkhauser A1 - Alan L Gustman A1 - John Laitner A1 - Olivia S. Mitchell A1 - Amanda Sonnega KW - Meta-analyses KW - Older Adults KW - Research KW - Social Security AB - Social Security has been a topic of widespread discussion in the last decade. Rising longevity and falling fertility have led to an aging population, which increases solvency challenges for the Social Security system. Public concerns over low national saving have led to an extensive dialog on the merits of reform that might change the U.S. system into one with fully or partially funded personal accounts. Meanwhile, pensions in the private sector have been evolving from predominantly defined benefit (DB) to predominantly defined contribution (DC), raising concerns that workers preparing for retirement have more personal responsibility, with more complex financial challenges, than ever before. VL - 69 UR - https://www.ssa.gov/policy/docs/ssb/v69n4/v69n4p51.pdf IS - 4 ER -