Once a week.
Subscribe to our weekly newsletter.
Who Would You Trust More: Your Friend, or a Total Stranger?
Recent research suggests what we thought we knew about social trust judgements may be all wrong.
Social trust, the expectation that people will behave with good will and avoid harming others, is a concept that has long mystified both researchers and the general public alike. Trust and cooperation is critical to social success, with neuroscientist Kelly Clancy suggesting that life operates by an undercurrent law of Survival of the Friendliest: evolution is about more than just rivalry, we need relationships. So, how trusting are you? Would you let a stranger borrow your phone in an emergency? Would you lend your friend money if they couldn't make rent? Have you ever been kinder to a stranger than you are to your sibling?
Many of us have undoubtedly sat in contemplation of what molds our trust in friends and strangers. What makes us inclined to give some people the benefit of the doubt, but occasionally cast a skeptical eye on others. And is there a relationship between how closely we trust people and how well we know them?
In 2016, Markus Freitag and Paul C. Bauer published their study, 'Personality Traits and the Propensity to Trust Friends and Strangers' in The Social Science Journal. Substantial research has already been conducted in the realm of social trust, however, Freitag and Bauer contend that endemic methodological shortcomings have consistently yielded inconclusive data.
Photo by Richard Renaldi, from his 'Touching Strangers' photo project.
To avoid these recurring pitfalls and place our understanding of this phenomenon on a more empirically illuminating trajectory, Freitag and Bauer initiated an investigation which examined the role of personality on individuals' levels of exhibited social trust, rather than merely looking at environmental factors and prior experiences as drivers of social trust.
Deviating from common research designs which plied respondents with unspecific lines of questioning that often clouded the distinction between generalized trust (strangers) and particularized trust (friends, neighbors, co-workers), Freitag and Bauer implemented a process that clearly differentiated classes of trustees, posed realistic and relatable questions, asked respondents to answer using numerical probabilities, and defined personality values using psychology's "Big Five" personality traits (agreeableness, openness to experience, extraversion, conscientiousness, and neuroticism-emotional stability) which were tailored to individual respondents. Moreover, they erected controls for sex and age.
Through randomly surveying 1,157 Swiss adults via computer-assisted telephone interviews, researchers asked respondents, "Please imagine a probability scale running from 0 to 100%. 0% means that the event will certainly occur. Imagine losing your wallet (with identity card) containing, among other things, 200 Swiss Francs. On a scale from 0 to 100%, how likely is it that the wallet will be returned to you if it is found by... a friend; a stranger that you don't know?"
So what steers our trust judgements? The study results showed that people often trust total strangers more than they trust their friends. Why? Essentially because we know better. When people know the trustee they base their decisions on their prior history with that person. When people don't know the trustee, there is no bank of information to draw from, so their judgements are a reflection of their personality traits. The study indicated that of the 'big five' personality traits, conscientiousness and openness were important attributes for determining trust in both strangers and friends, but agreeability played a significant role in determining the level of trust invested in strangers. If you're generally agreeable (defined as believing the best of others and rarely suspecting hidden intents, cooperative, warm, kind, and avoid conflicts) you will assume the best in others. The authors write:
... Our empirical analyses show that the effect sizes of the personality traits are larger for trust in strangers than in the case of trust in friends. Thus, in the absence of information about the trustee, our trust judgments seem to be contingent on our personality... If we agree that personality traits are, to a certain extent, rooted in biology and that certain personality traits affect trust judgments, it also means that trust is also inherited to a certain degree.
Fig.1. Regression coefficients for personality traits on trust in friends and trust in strangers (with and without controls).
Freitag and Bauer did highlight the limitations of their research. They expressly cautioned that the role of education, our networks, and our trust in institutions, matter and cannot be underestimated. Prior studies have clearly indicated that social trust correlates to corruption and crime, which demonstrates that environmental factors do indeed influence levels of social trust. To that end, the authors reiterate that their study is but an initial single nation foray into a grossly underdeveloped facet of social trust research, and that if our understanding of this societal issue is to evolve, theorems and empirical analyses need to further explore and account for personality and biological impacts.
If you want to know how a stranger might perceive you, here's psychologist Heidi Grant Halvorson on first impressions:
Imagine the birth of an entirely new ocean on the Martian surface.
There are lots of arguments for exploring space and colonizing other planets. Exploration is a natural part of our species. The knowledge we gain is bound to propel our scientific understanding and capabilities. And admittedly, there are plenty of commercial reasons too. Plus, sooner or later, the Earth is going to die out. To survive, we’ll have to become an interplanetary species.
Due to ours being a richer world today, and advances in rocketry and other technologies, a 21st century space race is just starting to heat up. This time, it isn’t just the US and Russia competing, but India, China, the EU, and private organizations such as SpaceX and Mars One. They all want to build the first permanent colony on the Red Planet. Mars One has the swiftest timeline, placing people on the surface by 2025. NASA has a far more cautious plan, establishing a permanent colony by 2040. But there are lots of stumbling blocks to overcome.
From the surface, Mars looks like a cold and forbidding wasteland, devoid of a breathable atmosphere, running water, and virtually uninhabitable, without spacesuits and airtight shelters. It’s worse than that, however. The planet is being constantly bombarded by solar radiation. Consistent exposure is likely to cause deadly cancers and early onset Alzheimer’s among colonists. How quickly or slowly these develop however, is anyone’s guess. It depends upon shielding and lots of other factors.
Astronauts working on the international space station (ISS) encounter the same amount of radiation as workers at a nuclear power plant. But those astronauts are only up there for a limited time. The longest mission to date is 215 days. What happens if you are constantly exposed for the rest of your life? There could also be serious consequences in terms of fertility. Radiation exposure can cause mutations in the genetic code, birth defects, and even infertility. How could a colony survive?
Artist rendition of Mars being buffeted by solar radiation. By: NASA/Jim Green.
Despite terrific obstacles, the planet has potential. All the things that are needed to terraform the planet are there, minus a strong magnetic field. There is water for instance, frozen at the poles and within the soil. It once had an atmosphere, free flowing water, an ocean, and perhaps even life.
Many colonization plans suggest terraforming the planet, which is expected to take hundreds of years. Some include releasing greenhouse gasses into the atmosphere from factories, or as Elon Musk has proposed, using nuclear weapons at the poles to melt the ice caps. But with this new plan, nature actually does all the work itself, without the dangers inherent in those other options.
At a recent NASA workshop, held at its headquarters in Washington, D.C., Planetary Science Division director Jim Green, proposed a captivating alternative—encapsulate the planet in an “artificial magnetosphere.” The Planetary Science Vision 2050 Workshop is an unveiling of proposals, which could occur or at least begin, by midcentury.
Dr. Green’s presentation was entitled, "A Future Mars Environment for Science and Exploration." Green and a panel of colleagues proposed an artificial "magnetic shield" provided by a device, dubbed Mars L1. This would remain in steady orbit between the planet and the sun, shielding it from solar bombardment.
The basic idea is having an object create a large electric circuit or dipole, generating enough energy to cover the planet in an artificial magnetic field. This would be composed of two oppositely charged magnets connected to inflatable structures, placed in orbit somewhere between Mars and the sun. One important aspect according to Dr. Green, "We need to be able then to also modify that direction of the magnetic field so that it always pushes the solar wind away.”
Building an artificial magnetosphere around Mars. By: NASA/Jim Green.
Though it sounds, what the presenter called “fanciful,” experiments creating miniature magnetospheres are already ongoing. These are in hopes of devising a way to protect astronauts aboard the ISS as well as manned spacecraft. Green wants to scale up such a system to cover a whole planet. "It may be feasible that we can get up to these higher field strengths that are necessary to provide that shielding," he said.
Once stable, the “magnetotail” is expected to allow a revival of the atmosphere. Half the atmospheric pressure of our own planet could occur within just a few years. 4.2 billion years ago, something caused the Red Planet’s magnetic field to severely weaken. Since that time, highly charged solar particles have slowly stripped it of its atmosphere, causing Mars to go from a warm, wet planet, to a dry, cold one. Today, the atmosphere is 100 times thinner than ours.
Shielding from such particles would warm the surface ~7 °F (4 °C). This would then melt the CO² at the poles, helping to build up the atmosphere. By creating a greenhouse effect, the ice on the planet’s surface should melt. "Perhaps one-seventh of the ancient ocean could return to Mars," Dr. Green said. At its current rate, this would take 700 million years.
Though the plan is entirely theoretical, if it worked, the planet could actually be livable in about a century or so, NASA scientists claim. That’s just a few generations. It’s vital to colonization too, as any sustainable colony will sooner or later have to start growing its own food. The distance from Earth to Mars is just too great. If it works, it could add an important tool to terraforming and help us colonize other places. “The solar system is ours, let’s take it,” Green said.
To learn more about Terraforming Mars, click here:
Climate change and artificial intelligence pose substantial — and possibly existential — problems for humanity to solve. Can we?
- Just by living our day-to-day lives, we are walking into a disaster.
- Can humanity wake up to avert disaster?
- Perhaps COVID was the wake-up call we all needed.
Does humanity have a chance for a better future, or are we just unable to stop ourselves from driving off a cliff? This was the question that came to me as I participated in a conference entitled The Future of Humanity hosted by Marcelo's Institute for Cross-Disciplinary Engagement. The conference hosted an array of remarkable speakers, some of whom were hopeful about our chances and some less so. But when it came to the dangers facing our project of civilization, two themes appeared in almost everyone's talks.
And here's the key aspect that unifies those dangers: we are doing it to ourselves.
The problem of climate change
The first existential crisis that was discussed was, as you might guess, climate change. Bill McKibben, the journalist and now committed activist who first began documenting the climate crisis as far back as the 1980s, gave us a history of humanity's inability to marshal action even in the face of mounting scientific evidence. He spoke of the massive, well-funded disinformation efforts paid for by the fossil fuel industry to keep that action from being taken because it would hurt their bottom lines.
It's not like some alien threat has arrived and will use a mega-laser to drive the Earth's climate into a new and dangerous state. Nope, it's just us — flying around, using plastic bottles, and keeping our houses toasty in the winter.
Next Elizabeth Kolbert, one of America's finest non-fiction writers, gave a sobering portrait of the state of efforts that attempt to deal with climate change through technological fixes. Based on her wonderful new book, she looked at the problem of control when it comes to people and the environment. She spoke of how often we get into trouble when we try to exert control over things like rivers or animal populations only to find that these efforts go awry due to unintended consequences. This requires new layers of control which, in turn, follow the same path.
Credit: Jo-Anne McArthur via Unsplash
At the end of the talk, she focused on attempts to deal with climate change through new kinds of environmental controls with the subtext being that we are likely to run into the same cycle of unintended consequences and attempts to repair the damage. In a question-and-answer period following her talk, Kolbert was decidedly not positive about the future. Because she had looked so deeply into the possibilities of using technology to get us out of the climate crisis, she was dubious that a tech fix was going to save us. The only real action that will matter, she said, is masses of people in the developed would reducing their consumption. She didn't see that happening anytime soon.
The problem of artificial intelligence
Another concern was over artificial intelligence. Here the concern was not so much existential. By this, I mean the speakers were not fearful that some computer was going to wake up into consciousness and decide that the human race needed to be enslaved. Instead, the danger was more subtle but no less potent. Susan Halpern, also one of our greatest non-fiction writers, gave an insightful talk that focused on the artificial aspect of artificial intelligence. Walking us through numerous examples of how "brittle" machine learning algorithms at the heart of modern AI systems are, Halpern was able to pinpoint how these systems are not intelligent at all but carry all the biases of their makers (often unconscious ones). For example, facial recognition algorithms can have a hard time differentiating the faces of women of color, most likely because the "training data sets" the algorithms were taught were not representative of these human beings. But because these machines supposedly rely on data and "data don't lie," these systems get deployed into everything from making decisions about justice to making decisions about who gets insurance. And these are decisions that can have profound effects on people's lives.
Then there was the general trend of AI being deployed in the service of both surveillance capitalism and the surveillance state. In the former, your behavior is always being watched and used against you in terms of swaying your purchasing decisions; in the latter, you are always being watched by those in power. Yikes!
The banality of danger
In listening to these talks I was struck by how mundane the sources of these dangers were when it comes to day-to-day life. Unlike nuclear war or some lone terrorist building a super-virus (threats that Sir Martin Rees eloquently spoke of), when it comes to the climate crisis and an emerging surveillance culture, we are collectively doing it to ourselves through our own innocent individual actions. It's not like some alien threat has arrived and will use a mega-laser to drive the Earth's climate into a new and dangerous state. Nope, it's just us — flying around, using plastic bottles, and keeping our houses toasty in the winter. And it's not like soldiers in black body armor arrive at our doors and force us to install a listening device that tracks our activities. Nope, we willingly set them up on the kitchen counter because they are so dang convenient. These threats to our existence or to our freedoms are things that we are doing just by living our lives in the cultural systems we were born into. And it would take considerable effort to untangle ourselves from these systems.
So, what's next then? Are we simply doomed because we can't collectively figure out how to build and live with something different? I don't know. It's possible that we are doomed. But I did find hope in the talk given by the great (and my favorite) science fiction writer Kim Stanley Robinson. He pointed to how different eras have different "structures of feeling," which is the cognitive and emotional background of an age. Robinson looked at some positive changes that emerged in the wake of the COVID pandemic, including a renewed sense that we (or most of us) recognize that are in this together. Perhaps, he said, the structure of feeling in our own age is about to change.
Let us hope, and where we can, let us act.
New research shines a light on the genetics of sudden cardiac deaths.
- Soccer player Christian Eriksen of Denmark recently collapsed on the field from a cardiac arrest. Thankfully, he survived.
- A new study examined the genetics underlying unexplained sudden cardiac death.
- About 20 percent of these unexplained deaths are likely due to genetics.
The football world was rocked recently when Denmark's Christian Eriksen collapsed while suffering from cardiac arrest on the field during a European Championship match on June 12. The 29-year-old star has won the Danish Football Player of the year five times. Doctors are still baffled as to why an athlete in prime shape would experience sudden cardiac arrest.
While Eriksen's case remains a mystery, a large team of researchers from the University of Maryland School of Medicine recently looked into the reasons a person with no apparent health problems dies from sudden cardiac death (SCD). Their study, published in JAMA Cardiology, found that roughly 20 percent of unexplained cases involve genetics.
The mystery of sudden cardiac death
SCDs are common, with between 180,000 to 450,000 occurring every year in the United States. While coronary heart disease is involved in between 50 to 75 percent of these cases, doctors are uncertain of the reasons in 30 to 40 percent of cases.
The team notes that most research on SCDs, such as in New Zealand, Denmark, and South Korea, tend to focus on homogenous populations of people under age 35. One study based in New York investigated a racially diverse cohort but included a number of infants. While these studies looked at genetic components of SCD, they write, "No systematic comparison of the genetics underlying cases of unexplained SCD between adult White and African American descendants has ever been conducted."
The State of Maryland's medical examiner's office has been collecting data on SCDs for over two decades, which gave the team a rich collection of data to pull from — over 5,000 such cases. From that data set, the researchers looked at 683 African American and white adults (median age: 41). In total, the DNA of 413 patients who died from unexplained SCD was genetically sequenced. Thirty different cardiomyopathy genes and 38 arrhythmia genes were examined.
Genetic screens for sudden cardiac death
Clinical associate professor of medicine and corresponding author Aloke Finn explains the importance of rooting out the cause of SCDs: "Genetic screening isn't routinely used in cardiology, and far too many patients still die suddenly from a heart condition without having any previously established risk factors. We need to do more for them."
One surprising finding was the large number of the deceased that carried the genetic variant for hypertrophic cardiomyopathy (HCM), which causes the heart's muscle tissue to be abnormally thick. This could explain why people with no apparent heart disease experience cardiac arrest seemingly out of nowhere. While HCM is a somewhat common heart disorder (with a prevalence as high as 0.2 percent), we're only just now learning the role of genes in determining who suffers from a fatal attack.
What is clear, however, is that those with particular genetic variants are likelier to die from unexplained SCD earlier in life than others who die from unexplained SCD.By identifying these genes, researchers hope this information could be used in future medical screenings. E. Albert Reece, Dean of the University of Maryland School of Medicine, believes this could save lives.
"This is a fascinating study that provides important new insights into devastating deaths due to unexplained cardiac abnormalities. It certainly makes the case for more research to address this urgent health need and save lives in the future."
Stay in touch with Derek on Twitter. His most recent book is "Hero's Dose: The Case For Psychedelics in Ritual and Therapy."