This instructional module on human development aspects of aging is one in a block of 10 modules designed to provide the human services worker who works with older adults with basic information regarding the aging process. An introduction provides an overview of the module content. A listing of general objectives follows. Two sections present informative material on each of the two objectives. Topics are changes and developments of life, including external and internal factors influencing development, and stages of growing and learning. Other contents include a summary and listings of selected readings and additional resources. (YLB)