These studies are based on information on time use in nine countries. Such studies will become more common as more governments fund time-budget surveys and as economists realize the benefits of using this type of data. Each does something that either could not have been accomplished at all, or...

Using time-diary data from 25 countries, we demonstrate that there is a negative relationship between real GDP per capita and the female-male difference in total work time per day -- the sum of work for pay and work at home. In rich northern countries on four continents, including the United...