Retirement Research Understanding the US Retirement System Understanding the US Retirement System Ten Important Facts About 401(k) Plans (pdf) Ten Important Facts About Roth IRAs (pdf) Ten Important Facts About IRAs (pdf) The Myth of Under-Annuitization: Managing Income and Assets in Retirement (pdf) How America Supports Retirement: Challenging the Conventional Wisdom on Who Benefits (pdf) Who Benefits from the U.S. Retirement System (pdf) Summary: Our Strong Retirement System: An American Success Story (pdf) Our Strong Retirement System: An American Success Story (pdf) The Success of the U.S. Retirement System (pdf) The Tax Benefits and Revenue Costs of Tax Deferral (pdf) The Evolving Role of IRAs in U.S. Retirement Planning (pdf) 401(k) Plans: A 25-Year Retrospective (pdf) Appendix: Additional Information for a 25-Year 401(k) Retrospective (pdf) The Individual Retirement Account at Age 30: A Retrospective (pdf)