Making Babies to Grow Economies Won't Work

(Bloomberg Opinion) -- In his recent state of the nation address, Russian President Vladimir Putin spent about 20 minutes on a sweeping constitutional reform proposal designed to keep him in power indefinitely — and about twice as much time on ideas meant to boost the birth rate. This is typical of Europe’s national-conservative governments, and even some relatively liberal ones, that are preoccupied with fertility policies because of declining populations.

Perhaps they’re on to something. In a just-published working paper, economist Charles Jones of Stanford University built some models to show that so-called natalist policies may be “much more important than we have appreciated” in determining whether nations, and the world as a whole, will end up with a shrinking population and no economic growth — or with both the population and the economy on a path of steady growth. The intuition behind the models is that growth is, essentially, a function of people’s ability to come up with new ideas, and if the number of people stops growing or falls, the stock of knowledge stops expanding.

“The social planner,” Jones wrote, “would like the economy to have a much higher fertility rate.” But the global trend is going in the opposite direction:

Historically, fertility rates in high-income countries have fallen from 5 children per women to 4, 3, 2, and now even fewer. From a family’s standpoint, there is nothing special about “above two” versus “below two” and the demographic transition may lead families to settle on fewer than two children. The macroeconomics of the problem, however, make this distinction one of critical importance: it is the difference between an Expanding Cosmos of exponential growth in both population and living standards and an Empty Planet, in which incomes stagnate and the population vanishes.

United Nations population data show birth rates going down steeply even in those parts of the world where it seemed just recently they’d never go down below the replacement rate of 2 births per woman. In Asia, for example, that’s projected to happen between 2055 and 2060. More educated populations and more women in the workforce mean fewer kids, and these are factors that aren’t going away in the foreseeable future.

In Europe, of course, the population growth rate already is negative. In the wealthier countries the decline is still offset by immigration from places that produce too many people for their countries of origin to sustain. That’s the case in Germany and France. But in post-Communist Eastern Europe, natalist policies are the only obvious way to slow down a population decline enhanced by emigration, which the European Union’s free-movement policy has stimulated. Besides, natalism goes hand in hand with nativism, and in a number of Eastern European countries, voters, and subsequently governments, are wary of trying to increase immigration.