This instructional module on psychological 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. Six sections present informative material on each of the six objectives. Topics are cognitive functions (intelligence, learning, memory), organic brain deterioration, psychotic brain deterioration, personality disorders, anxiety disorders, and depression disorders. Other contents include a summary and listings of selected readings and additional resources. (YLB)