When a military-led or military-influenced coup d’état occur in a foreign country, does evidence from demographic research merit consideration in the U.S. foreign policy response? It’s a question that U.S. policymakers should be asking as deteriorating political conditions in West Africa come increasingly into confluence with the limited tools available either to deter or respond to illegal and extra-legal forms of political succession.

In 2007, at the (U.S.) National Intelligence Council, a colleague and I set out to determine if we could forecast two distinct political phenomena, the rise and the demise of high levels of democracy. To guide our decade-long forecasts, we relied on a simple statistical model and a spreadsheet of demographic projections from the UN’s 2006 World Population Prospects data set. Now that the experimental period (from 2010 to 2020) has ended, we can look back and ask: How well did these forecasts perform? 

Until several months ago, demographers regarded a youthful age structure as an unequivocally detrimental demographic characteristic. Where more than half of the population is younger than age 25, countries are unable to attain high levels of economic and human capital development and face an increased risk of some forms of civil conflict. Yet, so far, during the ongoing pre-vaccine stage of the COVID-19 pandemic, the most age-structurally mature countries have been hardest hit by the disease. These countries are generally urbanized, wealthy, well-educated, and include a large proportion of seniors. And, somewhat surprisingly—despite being equipped with advanced medical technologies—these countries are experiencing the highest rates of mortality from complications related to COVID-19.

With rapidly aging populations and rising levels of female employment, the United States and other wealthy nations are facing unprecedented demands for non-familial care. These nations vary in their ability to address such demands. Those with more robust welfare states, including publicly supported, high-quality child care and elder care services and facilities, are generally able to meet growing needs for care, while those with weaker welfare states experience severe “care deficits,” leaving families with few alternatives. Increasingly, in the United States and elsewhere in the developed world, families are turning to migrants—usually women—to solve their care dilemmas.

This year, 2018, marks the 60^th anniversary of a landmark publication by a pair of academic social scientists who first recognized the close relationship between population age structure (the distribution of a country’s population, by age) and development. In Population Growth and Development in Low Income Countries (Princeton U. Press, 1958), demographer Ansley Coale (1917-2002) and economist Edgar M. Hoover (1907-1992) theorized that eventual declines in fertility would transform developing-country age structures. Coale and Hoover demonstrated that these newly transformed age structures would exhibit larger shares of citizens in the working ages, and smaller shares of dependent children and seniors (Fig. 1). This transition, they argued, would someday help lift countries with youthful populations in Asia, Latin America, and Africa out of the low-income bracket.