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

Thursday, November 30, 2017

The "Chain Migration" Effect of DREAMers Is Apt to be Small

Chain migration is a process whereby someone moves to another country, gets established, and then is able to help others make the same move. It is institutionalized in family reunification provisions in the immigration laws of the U.S. and many, if not most, other countries. Sentiment has increased in the U.S. Congress to do something about the DREAMers (young people born outside the U.S. but brought to the country when young by their undocumented immigrant parents) before the DACA provisions run out and these people run the risk of being deported, even though they've spent their lives in this country. The main objection raised to legalizing these people is the idea that it will unleash a huge chain migration as they apply for their relatives to come to the U.S. A new report by the Migration Policy Institute analyzes this claim and finds it to be very overblown.
While research shows that after obtaining legal permanent resident (LPR) status or citizenship, immigrants in past decades have sponsored an average of about 3.5 relatives each, these comparisons cannot be applied to DACA recipients and the broader population of young unauthorized immigrants brought to the United States as children (known as DREAMers). There are two key reasons for this, [and detailed in the report]: DREAMers have very different characteristics than most green-card holders, and their family members face constrained immigration possibilities.
The Migration Policy Institute (MPI) estimates that by the time DREAMers obtain citizenship—a process that would take at least five years—an average of 0.36 of their spouses and parents would be able to obtain a green card under the most generous of the DREAM Act-type bills introduced in Congress. Because of existing visa backlogs, it would take them another 13 years or more to sponsor 0.34 to 0.67 siblings (a number that includes the spouses and minor children of those siblings).
In other words, over a lifetime, the average legalizing DREAMer would sponsor at most about one family member—a number that is a far cry from the estimates of 3.5 to 6.4 relatives that rely on older data and cover different populations.
With any luck, enough members of Congress will get this message and not be intimidated by the made-up numbers from right-wing media such as Breitbard. 

Wednesday, November 29, 2017

Can Venezuela Handle a Higher Birth Rate?

The birth rate has gone down a lot in Venezuela in recent years. According to the UN demographers, it was nearly 3 children per woman only a couple of decades ago, and it is now nearly down to replacement level. The recency of this decline means that the country has a very large youth population--almost 4 out of every 10 Venezuelans is under age 20. But, a story today in the Washington Post suggests that contraceptives are not just priced out the market (as I had blogged about almost three years ago), they are nearly gone from the market.
For years, oral contraceptives, IUDs and condoms were available free at many public hospitals or through government programs. But the cash-strapped government has largely suspended those handouts, leaving some forms of contraception impossible to find and others prohibitively expensive.

“It’s hard for young people especially to access them,” said Vanessa Diaz, a gynecologist at Caracas University Hospital. “Contraceptives like condoms used to be given out and there were many brands available, some of them cheap. But that’s just not the case anymore.”
As you might expect, this is not keeping people from having sex. It just means that they are (a) more likely to get pregnant when they don't want to; (b) possibly going to have a dangerous unsafe abortion if pregnancy occurs; and/or (c) more likely to contract sexually transmitted diseases. None of these outcomes is going to be good for the future of the country. Under the severe conditions existing in Venezuela, it is sadly possible to imagine a situation in which an increase in the birthrate through unintended pregnancies is balanced by a rise in the death rate from STDs and other diseases for which medicines are no longer available. 


Tuesday, November 28, 2017

Turkey Tries to Leverage the Syrian Refugees

You may recall that the EU is paying Turkey a fairly large amount of money to effectively warehouse 3.5 million refugees from the Syrian civil war, rather than letting them head into Europe. A story in today's Guardian reports that Turkey's Prime Minister Binali Yıldırım has threatened to let those people go if the upcoming Syrian peace talks include the Kurds, whom the Turkish government considers to be terrorists.
A sixth round of UN-sponsored Syrian talks to find a political solution for the six-year conflict is due to resume in Geneva on Tuesday, and Turkish opposition to any role in the talks for the Kurdish forces, the YPG, is likely to prove one of many stumbling blocks. Turkey regards the Syrian Kurds as inextricably linked to the Kurdish militant organisation, the PKK, which operates inside Turkey.

Speaking after a meeting with Theresa May in London on Monday, Binali Yıldırım said it was possible for Turkey to renege on its agreement with the EU, under which 3.5 million refugees from neighbouring Syria have settled inside Turkey instead of heading for western Europe. 
Insisting Turkey is essential to Europe’s security and had prevented more than 53,000 foreign fighters reaching Syria and Iraq, he said: “We know how much [of] a headache the PKK constitute. If there is tolerance vis-a-vis these organisations in the long term, Europe will be endangering its own.”
The Prime Minister insisted this was not a threat (really??) but he did point that while Turkey has kept the refugees out of Europe, the EU has failed "to stick to a bargain struck in March 2016 in which Turkey would be granted visa liberalisation and cash in return for keeping Syrian refugees within its borders."

The article does not mention whether the fate of those Syrian refugees now in Turkey will be discussed at the Peace talks. One would assume that repatriation to Syria would be the preferred solution, although it is not clear how well they would all be received, nor what resources there would be for them to restart their lives.

Monday, November 27, 2017

A New Form of Election "Fraud" in the US

Michael Wines has a very interesting article in the NYTimes detailing the way in which the attempt to "clean up" lists of voters in several states wound up disenfranchising people who were, in fact, eligible to vote. At issue is something that I have been involved in for a long time--matching records. 

The motivation for cleaning up the voter lists is the requirement of the National Voter Registration Act of 1993 that voter registration officials should make a reasonable effort to cull their lists of people who have died, moved away, are not citizens, or are convicted felons whose rights have not been restored. How do you do that? Largely by comparing lists of people, like those who died or who are felons, with the voter registration list.
Officials do tap databases kept by state vital records agencies, the Social Security Administration and the Postal Service, which has a change-of-address list. But the databases cannot assure matches; some jurisdictions do not collect personal information like Social Security or driver’s license numbers that could make a positive ID easier. 
And the databases themselves have flaws and anomalies. Voters with similar or identical names compound the odds of accidental delisting. A University of Pennsylvania study of 125 million voter registration files from 2012 found that some three million registrants shared a common first name, last name and date of birth. And registrants from groups where a few surnames are commonly used are especially vulnerable to being mistakenly struck from the rolls.
In California, for example, where there is a large Hispanic population, many people have the same surname, and often the same first name, as well. This issue came to my attention many years ago, when I asked by the defense lawyers for Richard Ramirez (the "night-stalker") to analyze why there were too few Hispanics showing up for jury duty in the Los Angeles downtown courthouse. When I examined the program that the county was using to match DMV and Registrar of Voter lists, I discovered that it was throwing out people as matches on the two lists when they were actually different people. This disproportionately affected Hispanics. The county rewrote its code and then handed over the job of matching records to a private firm. How did I know what to look for? My doctoral dissertation involved a matching of birth, marriage, and infant mortality records and I had scoured the literature on matching and had written my own program (see Appendix A in Teenage Marriages if you are interested!).

In the legal system, it is obviously important that a person have a jury of his or her peers, and race/ethnicity is the most important characteristic of "peers" according to rulings by the US Supreme Court. So, inclusion of all jury-eligible persons on a master list from which jurors are chosen is important. In voting, it is important that a person who is eligible to vote not be erroneously thrown off the voting rolls and prevented from voting. As Wines points out, this practice in Florida may actually have been the difference in George Bush winning the presidency in 2000.

Sunday, November 26, 2017

Doing a Better Job of Feeding Africans

As the most rapidly growing region on earth, sub-Saharan Africa needs to figure out ways to feed itself, even as it fends off land grabs from outsiders. This week's Economist shows how this could be done--it's all in the DNA. The story is about so-called orphan crops--foods that Africans eat, but which are not cash crops and so they don't get the same kind of attention as do global staples such as wheat, rice, and maize.
The cereals which dominate human diets—rice, wheat and maize—have had their yields and nutritional values boosted over the years by scientific breeding programmes. In the modern era of genomics, they have had their DNA scrutinised down to the level of individual base pairs, the molecular letters in which genetic information is written. They are as far removed, nutritionally, from their ancestors of as little as two centuries ago as those ancestors were from the wild plants which begat them. Orphan crops have yet to undergo such a genetic revolution.
The neglect has two important consequences: (1) these traditional crops, such as cassava, sweet potatoes, lablab beans, water berries, bitter gourds and sickle senna, elephant ears (leafy vegetables) and African locusts (tree-borne legumes) do not have as high a yield per acre as might otherwise be possible; and (2) they are not as nutritious in vitamins as they could be.
Even for adults, a lack of calories and essential nutrients is harmful. For children it can be devastating. Poor childhood nutrition leads to stunting—inadequate bodily development, including the development of the brain. A report published by the World Health Organisation on November 16th suggests that almost a third of Africa’s children, nearly 60m of them, are stunted. And stunted children grow into adults unable to achieve their potential. Researchers at the World Bank reckon the effects of stunting have reduced Africa’s GDP by 9-10% from what it would otherwise be.
Fortunately, African agricultural scientists are at work on these issues. What Nobel Prize-winning Norman Borlaug was able to do for wheat and maize, people like Dr. Robert Mwanga of the International Potato Centre in Uganda are trying to do for these African "orphan" crops. Note that Uganda's International Potato Center is part of a global network of CGIAR centers whose goal is to improve nutrition and food security in developing nations. I had the opportunity to learn about them first hand when I was doing spatial demographic consulting for the Food and Agricultural Organization (FAO) of the UN. The world is clearly a better place for the work they do.