This report is dedicated to the memory of Paul B. Baltes, director of the Center of Lifespan Psychology at the Max Planck Institute for Human Development, Berlin, who died on November 7, 2006.

Paul was an active contributor in the committee’s early meetings, before illness limited his further participation in person. His expertise in multiple facets of aging research, breadth of perspective on the science policy and organizational issues embedded in the committee’s charge, and above all, skill, warmth, and civility in helping forge common ground on which individuals from disparate fields could base their analysis and recommendations were singular contributions that suffused subsequent committee meetings and the preparation of this report.