In the 21st century, the populations of the world s nations will display large and long-lived changes in age structure. Demography will matter in this century not by force of numbers, but by the pressures of waves of age structural change.

In rapidly industrializing countries, demographic changes continue to have significant effects on the well-being of individuals and families, and as aggregate human and financial capital. These effects may be analyzed in terms of inter-generational transfers of time, money, goods, and services. The chapters in this volume greatly develop our...