In the past 50 years, the world accelerated its transition out of long-term demographic stability. As infant and child mortality rates fell, populations began to soar. In most countries, this growth led to falling fertility rates. Although fertility has fallen, the population continues to...

The demographic transition creates a window of opportunity during which economies may benefit from a temporary increase in the working age share of the population. While many economies have already enjoyed these benefits, they remain a promising opportunity for much of Sub-Saharan Africa. We...

By late 2011 there will be more than 7 billion people in the world, with 8 billion in 2025 and 9 billion before 2050. New technologies and institutions, and a lot of hard work have enabled us to avoid widespread Malthusian misery. Global income per capita has increased 150% since 1960, outpacing...

In the past 50 years, the world accelerated its transition out of long-term demographic stability. As infant and child mortality rates fell, populations began to soar. In most countries, this growth led to falling fertility rates. Although fertility has fallen, the population continues to...

There is strong evidence that, in addition to individual and household characteristics, social interactions are important in determining fertility rates. Social interactions can lead to a multiplier effect where an individual’s ideas, and fertility choice, can affect the fertility decisions of...

For much (and perhaps most) of human history, demographic patterns were fairly stable: the human population grew slowly, and age structures, birth rates, and death rates changed very little. The slow long-run growth in population was interrupted periodically by epidemics and pandemics that could...

We analyze the effect of fertility on income per capita with a particular focus on the experience of Europe. For European countries with below-replacement fertility, the high cost of continued low fertility will only be observed in the long run. We show that in the short run, a fall in the...

High ratios of working age to dependent population can yield a increases the rate of economic growth. We estimate the parameters model with a cross section of countries over the period 1960 to 1980 inclusion of age structure improves the model’s forecasts for the period that including age...

The last 150 years have been a period of unusual demographic change. Baby booms occurred in the aftermath of wars in some countries. In others, baby booms occurred as a result of falling infant mortality rates and subsequent reductions in fertility. Baby boom generations produce an echo, in the...

Between 2000 and 2050, the share of the population aged 60 and over is projected to increase in every country in the world; the same is true for the 80+ population in all but one country (Mali). Worldwide, the largest absolute increases are yet to come. Although labor force participation rates...