IS THERE AN "OLDER

Most older adults rely on the automobile to maintain their mobility and indepen-dence, in spite of the fact that age-related behavioral and biomedical changes may make driving more difficult. Indeed, accident and fatality rates begin to rise after age 55. One research goal, therefore, is to identify functional measures that differ-entiate older adults who drive safely from those who do not. This paper discusses conceptual and methodological issues involved in addressing this question, con-siders why earlier research has been largely unsuccessful, presents a working model for approaching the problem, and argues the need for large-sample, pro-spective research in this area