more income elastic than public goods, as we document in the paper, an increase in income endogenously leads to smaller …

intrafamily relations and focus on households as collections of roommates. The model’s mechanism is that rising income leads to a … household size, consumption patterns, and income in the cross section at the end of the 20th century. We then project the model … back to 1850 by changing income. We find that our proposed mechanism can account for 37 percent of the decline in the …

growth rate of the working age population. A second reason is a shift in worker hours per capita from an increase due to the …