Tuesday, April 08, 2025

 

Supersize me



Political scientist Kathleen Thelen’s new book explains how America’s large retailers got very, very large.


Massachusetts Institute 

attention shoppers 

image: 

MIT political scientist Kathleen Thelen’s new book, “Attention, Shoppers!” examines the political dynamics behind the huge U.S. retail economy. 

 

view more 

Credit: Gretchen Ertl



Well into the late 19th century, the U.S. retail sector was overwhelmingly local, consisting of small, independent merchants throughout the country. That started changing after Sears and Roebuck’s famous catalog became popular, allowing the firm to grow, while a rival, Montgomery Ward, also expanded. By the 1930s, the U.S. had 130,000 chain stores, topped by Atlantic and Pacific supermarkets (the A&P), with over 15,000 stores. 

A century onward, the U.S. retail landscape is dominated by retail giants. Today, 90 percent of Americans live within 10 miles of a Walmart, while five of the country’s 10 biggest employers — Walmart, Amazon, Home Depot, Kroger, and Target— are retailers. Two others in the top 10, UPS and FedEx, are a major part of the retail economy.

The ubiquity of these big retailers, and the sheer extent of the U.S. shopping economy as a whole, is unusual compared to the country’s European counterparts. Domestic consumption plays an outsized role in driving growth in the United States, and credit plays a much larger role in supporting that consumption than in Europe. The U.S. has five times as much retail space per capita as Japan and the U.K., and 10 times as much as Germany. Unlike in Europe, shopping hours are largely unregulated.

How did this happen? To be sure, Walmart, Amazon, Target, and other massive chains have plenty of business acumen. But the full story involves a century or more of political tectonics and legal debates, which helped shape the size of U.S. retailing and the prominence of its large discount chains.  

“The markets that we take as given, that we think of as the natural outcome of supply and demand, are heavily shaped by policy and by politics,” says MIT political scientist Kathleen Thelen. 

Thelen examines the subject in a new book, “Attention, Shoppers! American Retail Capitalism and the Origins of the Amazon Economy,” published today by Princeton University Press. In it, she examines the growth of the particular model of supersized, low-cost, low-wage retailing that now features so prominently in the U.S. economy. 

Prioritizing prices

While a great deal has been written about specific American companies, Thelen’s book has some distinctive features. One is a comparison to the economies of Europe, where she has focused much of her scholarship. Another is her historical lens, extending back to the start of chain retailing.  

“It seems like every time I set out to explain something in the present, I’m thrown back to the 19th century,” Thelen says. 

For instance, as both Sears and Montgomery Ward grew, producers and consumers were still experimenting with alternate commercial arrangements, like cooperatives, which pooled suppliers together, but they ultimately ran into economic and legal headwinds. Especially, at the time, legal headwinds. 

“Antitrust laws in the United States were very forbearing toward big multidivisional corporations and very punitive toward alternative types of arrangements like cooperatives, so big retailers got a real boost in that period,” Thelen says. Separately, the U.S. Postal Service was also crucial, since big mail order houses like Sears relied on not just on its delivery services but also its money order system, to sell goods to the company’s many customers who lacked bank accounts.  

Smaller retailers fought large chains during the Depression, especially in the South and the West, which forms another phase of the story. But low-cost discounters worked around some laws through regulatory arbitrage, finding friendlier regulations in some states — and sometimes though outright rule-breaking. Ultimately, larger retailers have thrived again in the last half century, especially as antitrust law increasingly prioritized consumer prices as its leading measuring stick. 

Most antitrust theorizing since the 1960s “valorizes consumer welfare, which is basically defined as price, so anything that delivers the lowest price to consumers is A-OK,” Thelen says.  “We’re in this world where the large, low-cost retailers are delivering consumer welfare in the way the courts are defining it.” 

That emphasis on prices, she notes, then spills over into other areas of the economy, especially wages and labor relations. 

“If you prioritize prices, one of the main ways to reduce prices is to reduce labor costs,” Thelen says. “It’s no coincidence that low-cost discounters are often low-wage employers. Indeed, they often squeeze their vendors to deliver goods at ever-lower prices, and by extension they’re pressing down on wages in their supplier networks as well.” 

As Thelen’s book explains, legal views supporting large chains were also common during the first U.S. wave of chain-retail growth. She writes, “large, low-cost retailers have almost always enjoyed a privileged position in the American antitrust regime.” 

In the “deep equilibrium”

“Attention, Shoppers!” makes clear that this tendency toward lower prices, lower employee pay, and high consumer convenience is particularly pronounced in the U.S., where 22.6 percent of employees count as low-wage workers (making two-thirds or less of the country’s median wage). In the other countries that belong to the Organization for Economic Cooperation and Development, 13.9 percent of workers fit that description. About three-quarters of U.S. retail workers are in the low-wage category. 

In other OECD countries, on aggregate, manufacturers and producers make up bigger chunks of the economy and, correspondingly, often have legal frameworks more friendly to manufacturers and to labor. But in the U.S., large retailers have gained more leverage, if anything, in the last half-century, Thelen notes. 

“You might think mass retailers and manufacturers would have a symbiotic relationship, but historically there has been great tension between them, especially on price,” Thelen says. “In the postwar period, the balance of power became tilted toward retailers, and away from manufacturers and labor. Retailers also had consumers on their side, and had more power over data to dictate the terms on which their vendors would supply goods to them.”

Currently, as Thelen writes in the book, the U.S. is in a “deep equilibrium” on this front, in that many low-wage workers now rely on these low-cost retailers to make ends meet — and because Americans as a whole now find it normal to have their purchases delivered at lightning speed. Things might be different, Thelen suggests, if there are changes to U.S. antitrust enforcement, or, especially, major reforms to labor law, such as allowing workers to organize for higher wages across companies, not just at individual stores. Short of that, the equilibrium is likely to hold. 

For her part, Thelen hopes readers will learn more about an economic landscape we might take for granted, even while we shop at big chains, around us and online.

“The triumph of these types of retailers was not inevitable,” Thelen says. “It was a function of politics and political choice.”

###

Written by Peter Dizikes, MIT News

Book: “Attention, Shoppers! American Retail Capitalism and the Origins of the Amazon Economy”

https://press.princeton.edu/books/hardcover/9780691266510/attention-shoppers

 

Treating patients for opioid use disorder in the hospital leads to better outcomes after they are discharged, study finds





University of New Mexico Health Sciences Center




Offering hospitalized patients who are struggling with opioid use disorder a medication to treat their addiction makes it more likely that they will continue with follow-up care after they are discharged, a new study finds.

The intervention, described in a paper published this week in JAMA Internal Medicine, also directly pairs patients with treatment programs after they leave the hospital, said co-author Kimberly Page, PhD, MPH, a professor of Internal Medicine in The University of New Mexico School of Medicine.

“We know that we're doing the right thing for the patients. It reduces the length of their hospital stay and they get connected to treatment,” she said. “I'd like to think that this is the kind of program that contributes to the decline of overdose death mortality in New Mexico.”

UNM Hospital was one of three medical centers where the Substance Use Treatment and Recovery Team (START) approach was tested between November 2021 and September 2023. Researchers randomized 325 participants to receive the START intervention or treatment as usual. UNMH accounted for 190 of the study participants, Page said.

The patients receiving the START intervention were more than twice as likely as usual care patients to initiate medication for opioid use disorder in the hospital and were 50 percent more likely to continue with treatment following discharge, the study found.

During the START trial, study co-author Sergio Huerta, MD, a UNM addiction medicine specialist and associate professor of Internal Medicine, teamed up with a case manager to engage with patients admitted to UNMH for a variety of ailments. They were offered medications to treat opioid addictions, including buprenorphine and methadone, which attenuate withdrawal symptoms, he said.

“Patients usually feel immediately relieved upon getting those medications,” he said. “They may not ever have had exposure to those medications out in the community, so we call it a reachable moment. Oftentimes they're so acutely ill, and sometimes the substance use disorder is the underlying mechanism for them to be ill.”

In the START study, the case manager connected the patients with local programs where they could continue receiving treatment once they left the hospital, Huerta said. “We were developing relationships with community partners even outside of the university, which I think was really unique about this project as well.”

The hospital’s participation in the START trial led to the creation of a new addiction treatment consult service at UNMH called CAMINOS – Spanish for “Pathways,” Huerta said. The acronym stands for Coordinating Addiction Medicine with Inpatient and Outpatient Services.

“We're here to start people on treatment and make sure they continue that treatment when they leave,” he said. “It’s really been an awesome opportunity to more and more people. As our service continues to grow, we look forward to expanding our services next year.”

The CAMINOS program also provides an opportunity to disseminate knowledge about how to treat substance use disorder to other providers, Huerta said.

“We weren't really taught that much about substance use disorder in medical school,” he said. “This is kind of a relatively new thing, and I think physicians and providers alike want to provide the best care they can. If they can't, sometimes they just won't approach something, right? That’s part of what CAMINOS says: We know what those things are, we're here to help you. A lot of the providers are just so appreciative of that.”

The CAMINOS team has been educating other providers in treating substance use disorders, Huerta said.

“My big vision would be that other teams are starting patients on these medications, even without consulting us so it just becomes the standard of care,” he said. “The ideal state in the future is that it's just so commonplace. That's what we're working towards, but until then, we're here to lead that charge.”

 

Who is most likely to fall for fake news



A global study of more than 66,000 participants has revealed which groups of people are most susceptible to misinformation.


University of British Columbia




A global study of more than 66,000 participants has revealed which groups of people are most susceptible to misinformation.

Study participants assessed news headlines and tried to judge whether they were real or fake. On average, people had a harder time distinguishing between real and fake if they were:

  • Generation Z (born 1997-2012)
  • non-male
  • less educated
  • more conservative

However, some groups were more self-aware than others about their shortcomings in spotting misinformation.

“No matter who you are, no matter what you think you know, none of us is immune to misinformation,” said Dr. Friedrich Götz, assistant professor of psychology at the University of B.C. and the study’s senior author. “People should realize that all of us are exposed to misinformation on a regular basis, and all of us are likely to fall for it at some point.”

The global spread of misinformation poses a threat to democracy, which depends on a well-informed public. The new research by first authors Hyunjin Koo of UBC and Yara Kyrychenko of University of Cambridge, published Friday in Personality and Individual Differences, underscores the importance of understanding who is most at risk in order to develop effective strategies for counteracting fake news.

The researchers wanted to understand two key things:

  1. How likely different groups of people are to fall for misinformation.
  2. How well people think they can spot fake news.

They used a test called the Misinformation Susceptibility Test (MIST), which has been rigorously validated by psychologists and is available online for free. It provides a mix of news headlines for participants to decide which are genuine. Sample headlines include:

  • A Small Group of People Control the World Economy by Manipulating the Price of Gold and Oil
  • Left-Wingers Are More Likely to Lie to Get a Good Grade
  • The Government Is Conducting a Massive Cover-Up of Their Involvement in 9/11
  • About a Quarter of Large US Newspapers Laid off Staff in 2018

By comparing how well participants performed on the test with how confident they felt about their abilities, the researchers learned where the gaps are between actual ability and self-assessment.

Younger digital natives underperformed

It’s commonly believed that young people’s heightened exposure to digital environments gives them superior digital literacy. Generation Z's performance did not reflect this, but they were quite accurate in predicting their poor performance.

“There's still this widespread misconception that digital natives are better at navigating these environments,” said Dr. Götz. “That has been debunked in the academic world for quite a few years, but I don't think it has translated into public consciousness.”

People with more conservative political views were more likely to believe misinformation. Scores were lowest on the most conservative end of the political spectrum. Conservatives were fairly accurate in judging their ability to spot misinformation, but this was less true for those with extreme viewpoints.

Women, over a large sample, were slightly more likely than men to fall for misinformation. However, they were better than men at accurately judging their abilities.

Finally, people who had been to university or had higher degrees outperformed those with a high school diploma or less. However, folks with more education overestimated their ability to spot misinformation.

The work of Dr. Götz and his team could lead to better-informed policies and educational programs for reducing misinformation susceptibility—but only if this is a priority for governments.

“My sense is that not all democracies right now are really trying to address this problem. Worse yet, in the polarized world we live in, some actors, including politicians, may deliberately weaponize it,” said Dr. Götz. “But if a government acts in good faith and wants to solve this problem in society, then I think they could use this study to raise awareness and move to more intervention-based research.”

Interview language(s): English, German (Götz), Korean (Koo)

 

Life recovered rapidly at site of dino-killing asteroid. A hydrothermal system may have helped.




University of Texas at Austin
Sean Gulick with core sample 

image: 

Study co-author Sean Gulick, a research professor at The University of Texas at Austin, with a core sample from the Chicxulub crater. In 2016, Gulick co-led a scientific drilling expedition to sample the crater. 

view more 

Credit: The University of Texas at Austin, Jackson School of Geosciences.




About 66 million years ago, an asteroid slammed into the planet, wiping out all non-avian dinosaurs and about 70% of all marine species.

But the crater it left behind in the Gulf of Mexico was a literal hotbed for life enriching the overlying ocean for at least 700,000 years, according to research published today in Nature Communications.

Scientists have discovered that a hydrothermal system created by the asteroid impact may have helped marine life flourish at the impact site by generating and circulating nutrients in the crater environment.

“After the asteroid impact, the Gulf of Mexico records an ecological recovery process that is quite different from that of the global ocean, as continuous hydrothermal activity has created a unique marine environment,” said the study’s lead author Honami Sato, an assistant professor at Japan’s Kyushu University.

Sean Gulick, a research professor at The University of Texas at Austin’s Jackson School of Geosciences, is a co-author on the study. In 2016, he co-led a scientific drilling expedition to the impact site, which is called Chicxulub, that recovered core samples from the crater.

The study is the latest discovery to come from research on the 829 meters of core retrieved by the international team of researchers.

Previous research already determined that life returned to the site of the crater within a matter of years. The new study presents evidence that a hydrothermal system created by the asteroid impact and its melt sheet buried beneath the seafloor likely played a role in its recovery and sustenance for hundreds of thousands of years.

“We are increasingly learning about the importance of impact-generated hydrothermal systems for life,” Gulick said. “This paper is a step forward in showing the potential of an impact event to affect the overlying ocean for hundreds of thousands of years.”

The research hinges on a chemical element called osmium. A particular ratio of osmium is associated with asteroid materials. The researchers found evidence that osmium from the asteroid buried kilometers beneath the impact crater was continuously released in the Gulf of Mexico due to submarine hydrothermal activity.

In other words, as hot water moved beneath the seafloor and up toward the surface, so did traces of the asteroid. As the hydrothermal fluid cooled over time, the asteroid traces exited the water and precipitated into sediment. The researchers analyzed the sediment, which was brought to the surface in the core samples, and used it to determine the extent of the hydrothermal system and how long the enrichment of osmium lasted.

The researchers also found that as the hydrothermal system ceased releasing osmium from the asteroid, the types of marine life living at the crater site changed. They found that when the hydrothermal system was releasing this osmium, the type of plankton found living in the environment were associated with high-nutrient environments. When the osmium returned to pre-impact levels, the plankton were associated with low-nutrient environments.

This finding indicates that the ecosystem was no longer being sustained by the nutrients from the hydrothermal system being released into the overlying ocean. However, beneath the seafloor the hydrothermal system continued to persist for many millions of years; it just became ever more deeply buried by millions of years of sedimentation.

“This study reveals that impact cratering events, while primarily destructive, can in some cases also lead to significant hydrothermal activity,” said co-author Steven Goderis, a research professor at the Vrije Universiteit Brussel, in Belgium. “In the case of Chicxulub, this process played a vital role in the rapid recovery of marine ecosystems.”

With the demise of the dinosaurs, the Chicxulub impact is well known for its link to causing mass extinction. Gulick said that this research is important because it shows that this impact can be a catalyst for life, too. At the UT Center for Planetary Systems Habitability, Gulick is leading research on whether large impacts elsewhere in the solar system could help generate conditions that could sustain life on other planets or moons.

The science team included researchers from Kyushu University; the University of Texas at Austin’s Jackson School of Geosciences’ Department of Earth and Planetary Sciences and Institute for Geophysics; the Japan Agency for Marine-Earth Science and Technology; Vrije Universiteit Brussel, Belgium; Institute of Science Tokyo; Universidad de Zaragoza, Zaragoza, Spain; Universitat de Barcelona, Barcelona, Spain; and Imperial College London.


A figure showing a hypothesized semi-enclosed environment created by post-impact hydrothermal activity

Credit

Sato et al.

Even under stress, male-female pairs had each other’s backs



Researchers find sex differences in how mice — and possibly people — deal with stressful situations



Behavior study 

image: 

Neuroscientist Alexei Morozov conducts behavioral testing at the Fralin Biomedical Research Institute at VTC, where he works to understand how the brain processes social signals — research that potentially could help people affected by anxiety and stress-related disorders. 

view more 

Credit: Clayton Metz/Virginia Tech




When faced with a potential threat, mice often freeze in place. Moreover, when two animals are together, they typically freeze at the same time, matching each other’s periods of immobility. 

In a new study, researchers found that coordination during fear looks different in males and females — and changes when stress is involved. 

Male-female mouse pairs consistently stayed in sync during stressful situations, even when the animals were strangers. Same-sex pairs were more likely to fall out of step. 

The findings, published in Biological Psychiatry Global Open Science, suggest that opposite-sex pairs may rely on a more flexible or complex coordination strategy — one that doesn't break down under emotional pressure.

“Opposite-sex pairs showed a surprising resilience,” said Alexei Morozov, assistant professor at the Fralin Biomedical Research Institute at VTC and corresponding author of the study. “They synchronized their fear responses regardless of emotional context. And unlike same-sex pairs, they didn’t seem to rely on one clear strategy to do it.”

Although the research was conducted in mice, the study may offer clues about how sex and emotional context shape social behavior in other species, including people. 

Experts say the findings may shed light on the brain mechanisms involved in conditions like anxiety and post-traumatic stress disorder.

“This clever and well-designed study offers a new way to measure how animals synchronize their fear responses — and shows that males and females do it differently,” said Vadim Bolshakov, a professor of psychiatry at Harvard Medical School and at McLean Hospital, who was not involved in the research. “It highlights the complex interaction between social and emotional signals in stressful moments. The reported findings are unique and could potentially help inform strategies to support people who struggle with fear and stress regulation.”

In the study, mice learned to associate a sound with a mild but unpleasant stimulus. Later, when they heard the tone again, they froze. By observing how pairs of mice froze and moved together, the researchers were able to measure how closely their behaviors aligned.

Same-sex pairs showed distinct coordination styles. Males tended to copy each other’s actions — when one froze or moved, the other followed. 

Females behaved differently, becoming more responsive to their partners. If they initiated an action and their partner didn’t respond in the same way, they often stopped and corrected their own behavior. 

“Males copy. Females self-correct,” Morozov said. “Both strategies can get you to the same place — synchronization — but they’re built on different kinds of social processing. If you have male and female together, somehow, they form a strong social unit against stress.” 

Mixed-sex pairs remained unaffected by stress and continued to synchronize at a high level, regardless of familiarity.

Research Assistant Professor Wataru Ito was the first author of the study, which included Andrew Holmes of the Laboratory of Behavioral and Genomic Neuroscience of the National Institute on Alcohol Abuse and Alcoholism.

The study was supported by the National Institute of Mental Health of the National Institutes of Health and the Fralin Biomedical Research Institute’s Seale Innovation Fund.