We know that older adults have worse memory than younger adults when asked to intentionally (or explicitly) retrieve events from the past. But most of the time, the past influences our behavior through implicit memory, which is defined as the unintentional and unconscious use of memory. Unlike explicit memory, it is not clear whether implicit memory is affected by healthy aging. Results obtained from this line of inquiry are important because they could identify some of the cognitive processes that are uniquely affected by aging, and provide a starting point from which to distinguish these processes from those indicative of disease, such as Alzheimer's disease. In this talk, I will discuss current research and theorizing on this topic.