This paper develops a unified model of growth, population, and technological progress that is consistent with long-term historical evidence. The economy endogenously evolves through three phases. In the Malthusian regime, population growth is positively related to the level of income per capita....

In comparing Canada with the U.S., we first simulate the U.S. demographic transition, treating the U.S. as a closed economy. The time path of interest rates obtained from the U.S. simulations are then used in the Canadian simulations. In the Canada simulations, Canada is assumed to be an open...

This paper focuses on U.S. saving, demographics, and fiscal policy. We use data from the Consumer Expenditure Surveys of the 1980s to consider the effect of demographic change on past and future U.S. saving rates. Our findings indicate that demographic change may significantly alter the U.S....

The U.S. and other western economies are experiencing dramatic changes in growth and age structure of their populations. Fluctuations in birth rates are the most important determinants of these changes in the post war period. This paper examines the dynamic effects of baby "booms" and...

Population aging is primarily the result of past declines in fertility, which produced a decades long period in which the ratio of dependents to working age adults was reduced. Rising old-age dependency in many countries represents the inevitable passing of this "demographic dividend." Societies...

We assess quantitatively the effect of exogenous reductions in fertility on output per capita. Our simulation model allows for effects that run through schooling, the size and age structure of the population, capital accumulation, parental time input into child-rearing, and crowding of fixed...

We develop a novel method for assessing the effect of constraints imposed by spatially-fixed natural resources on aggregate economic output. We apply it to estimate and compare the projected effects of climate change and population growth over the course of the 21st century, by country and...