Rethinking Age and Aging - Population （重新考虑年龄和老龄化,）.pdf

Vol. 63, No. 4 December 2008 Rethinking Age and Aging by Warren Sanderson and Sergei Scherbov n ‘40 is the new 30’ – more than just a catchy phrase. n With increases in life expectancy, public policy must account for the number of years individuals will live after a given age. n New measures of population aging introduced. POPULATION REFERENCE BUREA U Population Reference Bureau The Population Reference Bureau informs people around the world about population, health, and the environment, and empowers them to use that information to advance the well-being of current and future generations. Funding for this Population Bulletin was provided through the generosity of the William and Flora Hewlett Foundation, and the David and Lucile Packard Foundation. Officers Francis L. Price, Chair of the Board President and Chief Executive Officer, Q3 Stamped Metal, Inc. and Q3 JMC Inc., Columbus, Ohio Faith Mitchell, Vice Chair of the Board Vice President for Program and Strategy, Grantmakers in Health, Washington, D.C. Montague Yudelman, Secretary of the Board Senior Fellow, World Wildlife Fund, Washington, D.C. William P. Butz, President and Chief Executive Officer Population Reference Bureau, Washington, D.C. Richard F. Hokenson, Treasurer of the Board Director, Hokenson and Company, Lawrenceville, New Jersey Trustees George Alleyne, Director Emeritus, Pan American Health Organization/World Health Organization, Washington, D.C. Wendy Baldwin, Director, Poverty, Gender, and Youth Program, The Population Council, New York Felicity Barringer, National Correspondent, Environment, The New York Times, New York Joel E. Cohen, Abby Rockefeller Mauzé Professor of Populations, Rockefeller University and Head, Laboratory of Populations, Rockefeller and Columbia Universities, New York Bert T. Edwards, Executive Director, Office of Historical Trust Accounti