The purposes of this subchapter are—

((1)) to expand the Nation’s knowledge and understanding of the older population and the aging process;

((2)) to design, test, and promote the use of innovative ideas and best practices in programs and services for older individuals;

((3)) to help meet the needs for trained personnel in the field of aging; and

((4)) to increase awareness of citizens of all ages of the need to assume personal responsibility for their own longevity.