This blog is intended to go along with Population: An Introduction to Concepts and Issues, by John R. Weeks, published by Cengage Learning. The latest edition is the 13th (it will be out in January 2020), but this blog is meant to complement any edition of the book by showing the way in which demographic issues are regularly in the news.

You can download an iPhone app for the 13th edition from the App Store (search for Weeks Population).

If you are a user of my textbook and would like to suggest a blog post idea, please email me at: john.weeks@sdsu.edu

Wednesday, February 28, 2018

The "Birth Strike" in South Korea

With the Winter Olympics now over in South Korea, a reporter for the Canadian Broadcasting Company (CBC) looked around and noticed the dearth of children. Luckily for me, Todd Gardner saw the article so that I can pass it on. Now, to be sure, I've blogged several times over the years about the low birth rate that now characterizes South Korea--most recently just a few months ago. Admittedly, I pay attention to South Korea partly because my daughter was born in Seoul, but the year she was born the average woman in that country was having more than 4 children on average, rather than the current level of 1.2. 

Keep in mind that in South Korea, as in China and Japan, the rapid decline in the birth rate helped to propel the country's economic success, as I have noted before. The CBC reporter has a story about the high cost of raising children and sending them off to college. 
"Many women are worried about all the expense and this makes us not want to have babies," she [a young woman aged 22] says. It's one of the many reasons behind South Korea's so-called 'birth strike,' a term commonly used in South Korea when talking about the decision many women have made not to have children until social and economic conditions are more favourable.
Sun-hwa Shim, 38, nods. She often hears her friends talking about the "birth strike," she says. "It's just kind of a social phenomenon these days."
At a deeper level, the problem lies in old-fashioned gender relations:
Shim says women like her face a troika of obstacles that keep them from having kids. Among OECD countries, South Korea ranks third-highest for number of hours worked, first for highest gender wage gap and last in terms of time men spend caring for their children.
This is a theme that I have often repeated in this blog. The underlying reason for very low fertility (as opposed to fertility levels that hover around replacement level) is the perpetuation of gender inequalities in all aspects of life--but especially in home life--even as the economy improves.  

Monday, February 26, 2018

Will Diverse Demographics Drive America's Future?

William Frey, a demographer with the Brookings Institution (and also a long-time Research Professor at the University of Michigan) has written extensively over the past several years about the growing demographic diversity of the millennial generation (people moving into young adulthood early here in the 21st century). A few days ago he posted a nice summary of his recent research on the Brookings website. He notes first that, among millennials, 44% are minorities (i.e., something other than non-Hispanic white). Secondly, there is a distinct spatial pattern to this demographic diversity.
Millennial diversity is especially evident in the core areas of America’s largest metropolitan areas (see Figure 1).
That is, nearly three-fifths of millennials residing in core urban counties are racial minorities, where more than a quarter are Hispanic, 18 percent are black, and the rest other races. Mature, largely inner-suburb millennials are only slightly less white—52 percent—than the national millennial population. But in emerging suburbs and exurbs, whites are far more prevalent at 62 percent and 72 percent, respectively. Suburban categories get less diverse as distance from the core increases.
The spatial pattern is not just a function of distance from the city center. There is also a geographic difference around the country, in which the most prominent feature is a north-south divide--with greater diversity in the southern part of the country than in the northern part (regardless of whether you are east or west). 

These changing demographics are obviously part of the story behind the contentious politics in the U.S. The question in my mind is how long will it take for today's racial/ethnic minorities to simply be part of the mainstream? Over the past century the country has witnessed immigrant groups such as Italians move into the mainstream, and we have seen religious groups such as Catholics and Jews become part of the mainstream. Human experience with xenophobia suggests that it may take a few generations, but with luck the diversity that Dr. Frey discusses will disappear in the future as we see each other just as fellow human beings.

Friday, February 23, 2018

Neanderthals Are Back in the News!

I don't think most of us give much thought to our very distant relatives--the Neanderthals. But they are back in the news because scientists have discovered ancient art on the walls of caves in Spain that seems to have been put there before Homo sapiens ever arrived in Europe. BBC News has a summary of the paper just published in Science.
Contrary to the traditional view of them as brutes, it turns out that Neanderthals were artists. A study in Science journal suggests they made cave drawings in Spain that pre-date the arrival of modern humans in Europe by 20,000 years. They also appear to have used painted sea shells as jewellery.
Art was previously thought to be a behaviour unique to our species (Homo sapiens) and far beyond our evolutionary cousins. The cave paintings include stencilled impressions of Neanderthal hands, geometric patterns and red circles. They occupy three sites at La Pasiega, Maltravieso and Ardales - situated up to 700km apart in different parts of Spain.
These discoveries bring back to light the fact that we Homo sapiens used to share the planet with other human species, even if we prefer not to think about our roots. One person who has been thinking about these things is Yuval Noah Harari, an Israeli historian who has written a best-selling book titled "Sapiens: A Brief History of Mankind." I just finished reading it and while I'm not sure that I agree with everything he says (more on that in subsequent blog posts...), he writes well and obviously knows a lot. Here's his quick summary of where we fit into history (from pages 5 and 6):
Homo sapiens [modern humans] belong to a family. This banal fact used to be one of history's most closely guarded secrets. Homo sapiens long preferred to view itself as set apart from animals, an orphan bereft of family, lacking siblings or cousins, and most importantly, without parents, but that's just not the case. Like it or not, we are members of a large and particularly noisy family called the great apes. Our closest living relatives include chimpanzees, gorillas and orang-utans. The chimpanzees are the closest. Just 6 million years ago, a single female ape had two daughters. One became the ancestor of all chimpanzees, the other is our own grandmother. 
Homo sapiens has kept hidden an even more disturbing secret. Not only do we possess an abundance of uncivilised cousins, once upon a time we had quite a few brothers and sisters as well. We are used to thinking about ourselves as the only humans, because for the last 10,000 years, our species has indeed been the only human species around. Yet the real meaning of the word human is 'an animal belonging to the genus Homo', and there used to be many other species of this genus besides Homo sapiens.
He then points out that humans first evolved in East Africa about 2.5 million years ago and that our human siblings include Homo rudolfensis (East Africa), Homo erectus (East Asia), Homo neanderthensis [--"man from the Neander Valley" (in Germany)]--(Europe and Western Asia), and a few others. However, for reasons about which we can only speculate, for the past 10,000 years Homo sapiens have been the only humans on the planet--still around so that we can enjoy the art of the Neanderthals.

Wednesday, February 21, 2018

American and French Women are Delaying Births

A few days ago I commented on the finding that American women were having fewer children than they said they wanted. The ink was scarcely dry on that post (so to speak...) when Pew Research reported that their analysis showed that American women were, in fact, just delaying births.
Not only are women more likely to be mothers than in the past, but they are having more children. Overall, women have 2.07 children during their lives on average – up from 1.86 in 2006, the lowest number on record. And among those who are mothers, family size has also ticked up. In 2016, mothers at the end of their childbearing years had had about 2.42 children, compared with a low of 2.31 in 2008.
The recent rise in motherhood and fertility might seem to run counter to the notion that the U.S. is experiencing a post-recession “Baby Bust.” However, each trend is based on a different type of measurement. The analysis here is based on a cumulative measure of lifetime fertility, the number of births a woman has ever had; meantime, reports of declining U.S. fertility are based on annual rates, which capture fertility at one point in time.
The same thing seems to be happening in France, according to this week's Economist. As I've noted before, France's pronatalist policies have enabled the country to avoid the very low fertility levels of several of its European neighbors. The birth rate has dipped a little of late in France, but it may be another case of delaying babies, not necessarily of avoiding them altogether.
It could yet be that, in the coming years, older motherhood in France will make up for the recent fall. As Gilles Pison, a French demographer, points out, this is what happened after a previous child-bearing dip in the 1990s. Despite the sharp recent drop, the French remain among the more enthusiastic procreators in Europe. If the country can revive this breeding instinct, France will be on course, post-Brexit, to overtake Germany as the most populous country in the European Union by the mid-2050s—and for the first time since Bismarck.
Will that thought create a competitive spirit amongst German women? We'll have to wait and see...

Tuesday, February 20, 2018

Professor Bob McCaa to be Honored at Population Meetings

Robert (Bob) McCaa is Research Professor at the University of Minnesota and has made extremely important contributions to demographic research over the years. Those contributions are being recognized this year by his selection as Laureate 2018 of the International Union for the Scientific Study of Population (IUSSP) and he will be honored at this year's annual meeting of the Population Association of America (PAA) in Denver in April. Here are some excerpts from his nomination letter to remind you of his accomplishments:
From the early 1970s to the late 1990s, McCaa’s work focused mainly on Latin American historical demography. He produced classic articles on marriage and fertility in 18th and 19th century Chile and Mexico, the role of smallpox in the demographic catastrophe of the 16th century, paleodemography, the demographic impact of the Mexican Revolution, and the household composition of the Nahua (Aztec) of ancient Mexico.
You will find references to this line of research in several places in my text, of course. And then:
In the mid-1990s, McCaa had an idea that shifted the trajectory of his career and profoundly affected the field of population studies. He had been working on the IPUMS project, which was then a harmonized series of microdata samples from nine U.S. decennial censuses. With harmonized codes, consistent record layouts, and integrated documentation, IPUMS greatly simplified use of the microdata for analyzing long-run demographic change. 
McCaa had a radical idea: IPUMS should be expanded to cover international censuses...Eventually McCaa transformed the terrain of international census microdata research by persuading over 100 statistical offices to allow their census microdata to be disseminated by a third party. Remarkably, all these countries agreed to a single standard license with no special conditions for access beyond the standard approval process conducted by IPUMS. The project, which has been continuously supported by both NSF and NICHD since 1999, is now the largest microdata archive in the world. IPUMS-International disseminates data from 303 censuses of 83 countries, with a combined total of 631 million records. By 2018, IPUMS expects to be distributing microdata on over a billion individuals residing in 100 different countries.
I am one of the thousands of people whose research has benefitted from this amazing database. If you aren't familiar with it, there's no time like now to explore the IPUMS International resources. Thanks, Bob!