Does the Mortality Decline Promote Economic Growth?

This paper analyzes qualitatively and quantitatively the e ects of declining mortality rates on fertility, education and economic growth. The analysis demonstrates that if individuals are prudent in the face of uncertainty about child survival, a decline in an exogenous mortality rate reduces precautionary demand for children and increases parental investment in each child. Once mortality is endogenized, population growth becomes a hump-shaped function of income per capita. At low levels of income population growth rises as income per capita rises leading to a Malthusian steady-state equilibrium, whereas at high levels of income population growth declines leading to a sustained growth steadystate equilibrium.Malthus, Survival Probability, Fertility, Education, Population Growth

A Stochastic Model of Mortality, Fertility, and Human Capital Investment

This paper examines the relationship between fertility and human capital investment, and it’s implications for economic growth, focusing on the e ects of declining mortality. Unlike the existing literature, this paper stresses the role of uncertainty about the number of surviving children. If the marginal utility of a surviving child is convex then there will be a precautionary demand for children. As the mortality rate and thus uncertainty falls, this demand decreases. Furthermore, lower mortality encourages educational investment in children. The key result is that this empirically observed quality-quantity trade o is realized only if uncertainty is incorporated into individual’s optimization problem.Uncertainty, Precautionary demand, Quality-Quantity trade of, Growth

Mortality Change, the Uncertainty Effect, and Retirement

We examine the role of changing mortality in explaining the rise of retirement over the course of the 20th century. We construct a model in which individuals make labor/leisure choices over their lifetimes subject to uncertainty about their date of death. In an environment in which mortality is high, an individual who saved up for retirement would face a high risk of dying before he could enjoy his planned leisure. In this case, the optimal plan is for people to work until they die. As mortality falls, however, it becomes optimal to plan, and save for, retirement. We simulate our model using actual changes in the US life table over the last century, and show that this “uncertainty e ect” of declining mortality would have more than outweighed the “horizon e ect” by which rising life expectancy would have led to later retirement. One of our key results is that continuous changes in mortality can lead to discontinuous changes in retirement behavior.uncertainty, retirement

Mortality Change, the Uncertainty Effect, and Retirement

We examine the role of declining mortality in explaining the rise of retirement over the course of the 20th century. We construct a model in which individuals make labor/leisure choices over their lifetimes subject to uncertainty about their date of death. In an environment in which mortality is high, an individual who saved up for retirement would face a high risk of dying before he could enjoy his planned leisure. In this case, the optimal plan is for people to work until they die. As mortality falls, however, it becomes optimal to plan, and save for, retirement. We simulate our model using actual changes in the US life table over the last century, and show that this “uncertainty effect” of declining mortality would have more than outweighed the “horizon effect” by which rising life expectancy would have led to later retirement. A calibration exercise, allowing for heterogeneity in tastes and other non-mortality factors influencing retirement, shows that falling mortality plausibly had a quantitatively significant effect on retirement.

Mortality Change, the Uncertainty Effect, and Retirement

We examine the role of changing mortality in explaining the rise of retirement over the course of the 20th century. We construct a model in which individuals make labor/leisure choices over their lifetimes subject to uncertainty about their date of death. In an environment in which mortality is high, an individual who saved up for retirement would face a high risk of dying before he could enjoy his planned leisure. In this case, the optimal plan is for people to work until they die. As mortality falls, however, it becomes optimal to plan, and save for, retirement. We simulate our model using actual changes in the US life table over the last century, and show that this 'uncertainty effect' of declining mortality would have more than outweighed the 'horizon effect' by which rising life expectancy would have led to later retirement. One of our key results is that continuous changes in mortality can lead to discontinuous changes in retirement behavior.

Why doesn’t Capital Flow from Rich to Poor Countries? An Empirical Investigation

We examine the empirical role of different explanations for the lack of flows of capital from rich to poor countries - the "Lucas Paradox." The theoretical explanations include differences in fun- damentals across countries and capital market imperfections. We show that during 1970-2000 low institutional quality is the leading explanation. For example, improving Peru's institutional quality to Australia's level, implies a quadrupling of foreign investment. Recent studies em- phasize the role of institutions for achieving higher levels of income, but remain silent on the specific mechanisms. Our results indicate that foreign investment might be a channel through which institutions affect long-run development.capital inflows, fundamentals, institutions, international capital market imperfections, neoclassical model

Why Doesn't Capital Flow from Rich to Poor Countries? An Empirical Investigation

We examine the empirical role of different explanations for the lack of flows of capital from rich to poor countries the "Lucas Paradox." The theoretical explanations include differences in fundamentals across countries and capital market imperfections. We show that during 1970-2000 low institutional quality is the leading explanation. For example, improving Peru's institutional quality to Australia's level, implies a quadrupling of foreign investment. Recent studies emphasize the role of institutions for achieving higher levels of income, but remain silent on the specific mechanisms. Our results indicate that foreign investment might be a channel through which institutions affect long-run development.

HIV and Fertility in Africa: First Evidence from Population Based Surveys

The historical pattern of the demographic transition suggests that fertility declines follow mortality declines, followed by a rise in human capital accumulation and economic growth. The HIV/AIDS epidemic threatens to reverse this path. A recent paper by Young (2005), however, suggests that similar to the "Black Death" episode in Europe, HIV/AIDS will actually lead to higher growth per capita among the a affected African countries. Not only will population decline, behavioral responses in fertility will reinforce this decline by reducing the willingness to engage in unprotected sex. We utilize recent rounds of the Demographic and Health Surveys that link an individual woman’s fertility outcomes to her HIV status based on testing. The data allows us to distinguish the effect of own positive HIV status on fertility (which may be due to lower fecundity and other physiological reasons) from the behavioral response to higher mortality risk, as measured by the local community HIV prevalence. We show that HIV-infected women have significantly lower fertility. In contrast to Young (2005), however, we find that local community HIV prevalence has no significant effect on non-infected women's fertility.HIV/AIDS, fertility, economic development