Economists wish to compare prices, real income, and output across countries and regions for many purposes. In the past, such comparisons were made in nominal terms, or by using exchange rates across countries, ignoring differences in price levels and thus distorting the results. Great progress...

Rapidly changing technology, the globalization of markets, and the declining role of unions are just some of the factors that have led to dramatic changes in working conditions in the United States. Little attention has been paid to the difficult measurement problems underlying analysis of the...