Menus Subscribe Search

Follow us


Mass Layoffs and the Lost Boys

• February 26, 2010 • 10:37 AM

New research suggests news of impending large-scale unemployment results in fewer males being born.

The economic downturn has spawned a spate of scary statistics. How many jobs have been lost? How many people are unemployed, or underemployed? How large is the national debt?

As pundits pondered those data points, a group of University of California researchers were crunching a different set of disturbing numbers. Their unorthodox measure of how the threat of unemployment affects families is summed up by a disquieting question:

How many boys have not been not born?

To be precise, a research team from the University of California, Berkeley, School of Public Health calculated the number of frail male fetuses that were spontaneously aborted by mothers facing economic insecurity. Looking solely at the state of California between April 1995 and December 2007, they estimate the number is just over 3,000.

Their paper, Selection in Utero: A Biological Response to Mass Layoffs,” has just been published in the American Journal of Human Biology. The researchers, led by Ralph Catalano and Claire Margerison Zilko, write that the previously reported health effects of economic insecurity may “represent only the tip of a more fundamental ‘adaptation iceberg.’”

Specifically, their research supports the argument that when women receive signals that times are tough, their bodies retain the tendency, shaped over thousands of years through natural selection, to reject offspring less likely to survive.

To our ancient ancestors, those signs would presumably be signals of impending drought or other natural disaster, which would indicate a coming food scarcity. Catalano and colleagues concluded the closest thing we have today is the announcement of mass layoffs at major employers, which impacts “the degree to which the larger population perceives a threat to its economic security.”

Such threats are bad news to small male fetuses because “a relatively large fraction” of them fall near “a critical rank below which gestations spontaneously end,” the researchers explain. If they are born, these small males are more likely to die than larger infants and females of equivalent size.

The researchers examined California’s ratio of male to female births from mid-1995 to the end of 2007 and compared it to the federal Labor Department’s monthly statistics on mass layoffs in the state. The government reports a mass layoff has taken place when 50 or more people file for unemployment insurance from a single company over five weeks.

After doing some complex calculations, they estimated that news of impending mass layoffs “predicted the loss of 3,090 males in utero” during the 61 months (out of the 141 they examined) in which unemployment claims exceeded the expected number.

The male-female birth ratio generally favors boys (who are born at a rate of about 1.05 for every female), but the ladies catch up later in life, since they tend to live longer than men. Catalano’s research touches on that issue as well. “Males from low sex-ratio birth cohorts appear to enjoy relatively longer life spans on average,” he and his colleagues write, “perhaps due to ‘culling’ of the frailest among them in utero.”

So, if these researchers are correct, periods of high unemployment and economic instability —like the era we are currently living through — produce fewer, but healthier, males. That has to be considered an unexpected economic indicator.

Sign up for our free e-newsletter.

Are you on Facebook? Become our fan.

Follow us on Twitter.

Add our news to your site.

Tom Jacobs
Staff writer Tom Jacobs is a veteran journalist with more than 20 years experience at daily newspapers. He has served as a staff writer for The Los Angeles Daily News and the Santa Barbara News-Press. His work has also appeared in The Los Angeles Times, Chicago Tribune, and Ventura County Star.

More From Tom Jacobs

Tags: , , , ,

If you would like to comment on this post, or anything else on Pacific Standard, visit our Facebook or Google+ page, or send us a message on Twitter. You can also follow our regular updates and other stories on both LinkedIn and Tumblr.

A weekly roundup of the best of Pacific Standard and PSmag.com, delivered straight to your inbox.

Follow us


Subscribe Now

Quick Studies

How Junk Food Companies Manipulate Your Tongue

We mistakenly think that harder foods contain fewer calories, and those mistakes can affect our belt sizes.

What Steve Jobs’ Death Teaches Us About Public Health

Studies have shown that when public figures die from disease, the public takes notice. New research suggests this could be the key to reaching those who are most at risk.

Speed-Reading Apps Will Not Revolutionize Anything, Except Your Understanding

The one-word-at-a-time presentation eliminates the eye movements that help you comprehend what you're reading.

To Make Friends, Autistic Kids Need Advice—and Space

Kids with autism need help when it comes to making friends—but they also need their independence.

Gaming the Wedding Gift Registry System

Registering for your wedding? Keep your must-have items away from the average price of your registry—they’re unlikely to be purchased.

The Big One

One state—Pennsylvania—logs 52 percent of all sales, shipments, and receipts for the chocolate manufacturing industry. March/April 2014