The study analyzes rates of residential mobility and internal migration for the United States, Australia, Canada, Great Britain, Ireland, Japan, and Taiwan. Topics examined include trends in the rate of residential mobility, the number of times a person can expect to move in a lifetime, and how geographical mobility is spread over the life cycle of individuals in the different countries. Other sections deal with the authors' explanations of why countries differ in rates of residential mobility and some present impacts and possible future trends.