Tuesday, May 14, 2024

 

Understanding turbulence through artificial intelligence


A team from UPV participates in developing a new technique that allows studying turbulence in a completely different way from that used in the last 100 years.



UNIVERSITAT POLITÈCNICA DE VALÈNCIA

Understanding Turbulence through Artificial Intelligence 

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ANDRES CREMADADES AND SERGIO HOYAS (UPV)

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CREDIT: UPV




When we mention turbulence, the first association that springs to mind is often the uncomfortable jostling experienced during airplane travel. However, turbulence encompasses far more than just that; it's a continuous presence in our daily lives. This term denotes the irregular and chaotic behavior exhibited by fluids, gases, and liquids in a wide array of scenarios. Think of the swirling air in our cities, the waters of seas and rivers, or within engines and around vehicles like cars, ships, and airplanes. Actually, turbulence is as a significant factor in energy dissipation within these modes of transportation, accounting for up to 15% of the annual CO2 emissions generated by humanity.

Now, an international team composed of scientists from the Universitat Politècnica de València and the universities of Edinburgh and Melbourne, led by Ricardo Vinuesa from the Flow Institute of the Royal Institute of Technology, KTH, has developed a new technique that allows us to study turbulence in a completely different way from that used in the last 100 years. Their work has been published in Nature Communications.

The main difficulty of fluid mechanics is that "although the equations of fluid mechanics are about 180 years old, the problem remains open. These equations are unsolvable algebraically or numerically for practical cases, even for the world's largest computers. For a typical jetliner, we would need a memory equivalent to a month of the internet just to configure the simulation," indicates Sergio Hoyas, professor of aerospace engineering at UPV and researcher at IUMPA. "We need to understand turbulence to improve the simplified models used in daily life. And there is a new tool: artificial intelligence," adds Ricardo Vinuesa.

Although several works already apply artificial intelligence to fluid mechanics, the great novelty of this study is that it allows, for the first time, not to simulate or predict but to understand turbulence.

From a database of about one terabyte, the researchers trained a neural network that allows for the prediction of the movement of a turbulent flow. Using this network, they have managed to track the evolution of the flow by individually removing small structures, subsequently evaluating the effect of these structures using the SHAP algorithm.

"The most important thing is that the results of this analysis exactly match the knowledge acquired in the last 40 years and extend it. Our method has managed to reproduce this knowledge without the neural network knowing anything about physics," emphasizes Andrés Cremades, a postdoctoral researcher at KTH and the article's first author.

"Experimental validation with data from the University of Melbourne indicates that our method applies to realistic flows and opens up a novel path for understanding turbulence," Vinuesa concludes.

 

Why students cheat in online exams




UNIVERSITY OF COLOGNE





Media psychologists at the University of Cologne have studied how students’ individual needs, conceptions and reasons relate to cheating behaviour in online exams. Online exams have become a more common type of exams at universities not least since the Covid-19 pandemic. They are advantageous because they save time and offer flexibility. However, cheating attempts present a big challenge for lecturers. This is why universities have been working on ways to thwart cheating in online exams by putting organizational and technical measures into place. According to the psychologists Dr Marco Rüth and Professor Dr Dr Kai Kaspar from the Faculty of Human Sciences at the University of Cologne, cheating attempts can also signal that psychological aspects and deeper-seated problems which affect students’ learning behaviour and well-being are not given enough attention. This is where their current study comes into play. The study is titled ‘Cheating behaviour in online exams: On the role of needs, conceptions, and reasons of university students’ and has been published in the Journal of Computer Assisted Learning.
The results of the study are based on an anonymous online survey in which 339 students from different universities in Germany took part. The extensive study consisted of three parts. 
The first part of the study revealed that it is less likely for students to cheat when lecturers demonstrate why the exam content is necessary in their future professional practice instead of solely pointing out the value of good grades for their future careers. Cheating behaviour is also less likely to take place when the exam tasks are presented as authentically as possible and are linked to future job requirements. Questions testing knowledge that check if course content has been learned by heart, however, encourage cheating attempts. In addition, cheating attempts become less likely when the lecturers offer the students detailed feedback on the exam results instead of only announcing grades.
In the second part of the study the research team examined how students’ perceptions of online exams are related to their previous cheating attempts and their intentions to cheat in future online exams. The results have shown that three considerations are of particular importance. The more negative students’ perception of online exams was, e.g. that online exams impair learning, the more intense was their reported cheating behaviour in past online exams. Furthermore, students’ cheating behaviour and cheating intention was higher the stronger the impression of the students was that online exams stimulate collaboration and mutual support among students. Conversely, students’ cheating behaviour and cheating intention was lower the stronger the opinion of the students was that online exams can contribute to the improvement of teaching.  
The third part of the study examined students’ main personal reasons for and against cheating in online exams. The three main reasons cited for cheating behaviour were the significance of grades, the perception that exams were unfair and the belief that there is a marginal risk of being caught. Among the most common reasons against cheating were moral norms and values such as honesty as well as the fear of being caught and the subsequent consequences like being expelled.  
Overall, the results of the study show that psychological factors – such as individual needs, conceptions and reasons – play an important role in the cheating behaviour in online exams. “A stronger consideration of these factors when designing courses and exam formats can reduce cheating behaviour and, in the long term, positively influence students’ learning behaviour and their well-being,” said Dr Marco Rüth, corresponding author of the study. “This could eventually strengthen the acceptance of online exams as a format at universities.”
 

 

New Study: The price tag of phasing-out coal



CHALMERS UNIVERSITY OF TECHNOLOGY
Phasing out coal figure 

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ESTIMATED COMPENSATION FOR CHINA AND INDIA TO MEET 1.5°C (ORANGE) IS NOT ONLY LARGER IN ABSOLUTE TERMS BUT ALSO WOULD REQUIRE A LARGER SHARE OF THEIR GDPS.

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CREDIT: CHALMERS UNIVERSITY OF TECHNOLOGY | LOLA NACKE




Coal phase-out is necessary to solve climate change, but can have negative impacts on workers and local communities dependent on coal for their livelihoods. Researchers at Chalmers University of Technology in Sweden and Central European University in Austria have studied government plans for coal phase-out around the world and discovered that more than half of such plans include monetary compensation to affected parties. This planned compensation globally amounts to USD 200 billion, but it excludes China and India, the two largest users of coal that currently do not have phase-out plans. The study shows that if China and India decide to phase out coal as fast as needed to reach the Paris climate targets and pay similar compensation, it would cost upwards of USD 2 trillion.

To slow global warming, coal use needs to end. Many governments, mostly in Europe, have begun to phase-out coal, but these policies can harm companies, risk unemployment, and lead to economic hardship for coal-dependent regions. In response, some countries have adopted what are known as ‘just transition’ strategies, where governments support negatively impacted companies, workers, and regions. Germany for example, has pledged over EUR 40 billion to support those affected by coal phase-out.

“Previously, coal phase out has often been blocked by the interests opposing it. Many countries have put money on the table through ‘just transition’ strategies which has made coal phase-out politically feasible,” says Jessica Jewell, Associate Professor at Chalmers University of Technology, and one of the authors of the study.

The researchers have studied all countries with coal phase-out plans around the world and found that those with the most coal power production and with plans for rapid phase-out, have compensation policies in place.

In total, these 23 countries with 16 percent of the world’s coal power plants have pledged about USD 209 billion in compensation. This may sound like a lot of money, but the researchers point out that it equates to roughly 6 gigatons of avoided CO2 emissions and the cost of compensation for coal phase-out per tonne of avoided CO2 emissions (USD 29-46 per tonne) is actually well below recent carbon prices in Europe (~USD 64-80  per tonne).

“So far these ‘just transition’ policies are consistent with, or lower than, the carbon prices within the EU, which means they make sense in terms of climate change. But more funding is likely needed if we want to reach the Paris climate target,” says Jewell.

This is because achieving the goals of the Paris climate agreement will not be possible without participation of the world’s major coal consumers, China and India, which have more than half of the world’s coal plants, but no phase-out plans currently in place. The study finds that, for China and India to adopt compensation policies similar to those already in place, the estimated compensation amount for both countries would be USD 2.4 trillion for the 2°C target and USD 3.2 trillion for the 1.5°C target.

“The estimated compensation for China and India is not only larger in absolute terms, but would also be more expensive compared to their economic capacities”, says Lola Nacke, a doctoral student at Chalmers University of Technology, and one of the authors of the study.

A big question thus is where such large sums of money would come from. Today about half of all compensation is funded from international sources such as Just Energy Transition Partnerships* supporting coal phase-out in Vietnam, Indonesia and South Africa. International finance might also be needed to support future coal phase-out compensation in major coal consuming countries. However, the researchers point out that the estimated amounts of compensation for China and India alone are comparable to the entire international climate finance pledged in Paris, and larger than current international development aid to these countries.

“Discussions about the cost of climate change mitigation often focus on investments in renewable energy technologies – but we also see it’s essential to address social implications of fossil fuel decline to enable rapid transitions”, says Lola Nacke.

 

Fact Box:

*Just Energy Transition Partnerships  –  Just Energy Transition Partnerships (JETPs) are new multi-lateral structures for accelerating the phase-out of fossil fuels. These intergovernmental partnerships coordinate financial resources and technical assistance from countries in the Global North to a recipient country to help it in this regard. JETPs related to coal phase-out are currently in place for Vietnam, Indonesia and South Africa.

EU Just Transition Fund  –  The fund is the first pillar of the Just Transition Mechanism. The Commission provides support to Member States having identified the territories expected to be the most negatively impacted by the transition towards climate-neutrality. The Just Transition Fund supports the economic diversification and reconversion of the territories concerned. 

Paris Climate Agreement  –  To tackle climate change and its negative impacts, world leaders at the UN Climate Change Conference (COP21) in Paris reached a breakthrough on 12 December 2015: the Paris Agreement. The Agreement sets long-term goals to guide all nations to:

  • substantially reduce global greenhouse gas emissions to hold global temperature increase to well below 2°C above pre-industrial levels and pursue efforts to limit it to 1.5°C above pre-industrial levels, recognising that this would significantly reduce the risks and impacts of climate change.
  • provide financing to developing countries to mitigate climate change, strengthen resilience and enhance abilities to adapt to climate impacts.

 

More about the research:

The research is presented in the paper: " Compensating affected parties necessary for rapid coal phase-out but expensive if extended to major emitters", published in the journal Nature Communications.

The researchers involved in the study are Lola Nacke, Vadim Vinichenko, Aleh Cherp, Avi Jakhmola and Jessica Jewell, and they are active at Chalmers University of Technology, Sweden; Central European University, Austria; Lund University, Sweden; University of Bergen, Norway and International Institute for Applied Systems Analysis, Austria.

 

For more information, please contact: 

Lola Nacke, Doctoral Student, Division of Physical Resource Theory, Department of Space, Earth and Environment, Chalmers University of Technology, Sweden, lolan@chalmers.se

Jessica Jewell, Associate Professor, Division of Physical Resource Theory, Department of Space, Earth and Environment, Chalmers University of Technology, Sweden, jewell@chalmers.se, +46 31 772 61 06

 

The contact persons speak English and are available for live and pre-recorded interviews. At Chalmers, we have podcast studios and broadcast filming equipment on site and would be able to assist a request for a television, radio or podcast interview.

 

Caption for figure: Estimated compensation for China and India to meet 1.5°C (orange) is not only larger in absolute terms but also would require a larger share of their GDPs.

 

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Analyzing the underlying causes of the food crisis in Gaza



INTERNATIONAL INSTITUTE FOR APPLIED SYSTEMS ANALYSIS
Gaza Food Crisis - Prices Fluctuation Graph 

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FIGURE 1. MEASUREMENT OF FOOD PRICE INSTABILITY IN WEST BANK AND GAZA STRIP SINCE 2007.

LEFT: MOVING STANDARD DEVIATION (QUARTERLY) OF THE NOMINAL CONSUMER BREAD PRICE. THE SHADED COLORED AREAS CORRESPOND TO SIGNIFICANT ARMED EVENTS IN RECENT HISTORY: OPERATION CAST LEAD (1), OPERATION PROTECTIVE EDGE (2), THE 2021 ISRAEL–PALESTINE CRISIS (3), AND THE ISRAEL–HAMAS WAR (4).

RIGHT: MONTHLY PRICE VOLATILITY OF OTHER STAPLES, PRIOR TO OCTOBER 2023.

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CREDIT: ROTEM ZELINGHER / IIASA




IIASA research highlights that besides the devastating impacts of the Israel-Hamas War, there are additional longstanding causes for the ongoing food crisis, and tailored strategies are urgently required to resolve it.

The recent escalation of the Israel-Hamas conflict sparked a devastating humanitarian crisis in the Gaza Strip. In response to a large-scale attack on Israel by Hamas and its allies, Israel responded with airstrikes, a blockade, and a ground invasion of Gaza, resulting in widespread destruction and significant loss of life on both sides. The conflict is further complicated by increasing food insecurity in the Gaza Strip, with alarming levels of acute food insecurity affecting 95% of the population, according to the Integrated Food Security Phase Classification (IPC) Famine Review Committee (FRC).

A new policy brief by IIASA Postdoctoral Research Fellow Rotem Zelingher explores the root causes of the food crisis in the Gaza Strip, highlighting that chronic food insecurity in the region pre-dated the war and stems from a multiplicity of governance-related factors. The outbreak of conflict has further exacerbated the pre-existing vulnerabilities, making the situation even more dire.

As part of her research, Zelingher investigated the complex interconnectedness of factors contributing to the current situation. She traced the market trends back to 2007, the pivotal year when the State of Palestine was divided into two entities: the West Bank and the Gaza Strip. The analysis uncovered major disparities with regard to the prices of staple foods.

The study shows that both the Gaza Strip and the West Bank heavily rely on bread as a staple food, making them particularly vulnerable to food price fluctuations and disruptions in supply chains. Research uncovered that the West Bank displayed efforts to stabilize food prices, resulting in growing stability in price trends over time, possibly due to effective government-led food security initiatives. In contrast, the Gaza Strip experienced erratic fluctuations in prices of all staple foods, especially rice and sugar, highlighting a potential contrast in governance approaches. It is evident that the fluctuation of bread prices in the Gaza Strip was more closely linked to global wheat prices than to local security crises.

This disparity suggests underlying governance differences and raises questions about the efficacy of the implemented food-security strategies in the Gaza Strip. Inconsistency in pricing in the Gaza Strip continues to be exacerbated by purported corruption and suppression of dissenting views by Gazan authorities.

In addition, the policy brief highlights that observer reports by the United Nations, USAID, and other organizations have alleged exploitation by Gazan government officials of humanitarian aid intended for civilians, including seizing control of food aid. Similar reports have been made regarding fuel and electricity supplies, as well as financial aid, which could further complicate the situation. The research further considers Israel’s tight control over the economy of the Palestinian territories as a factor in the delayed development process of both the West Bank and the Gaza Strip.

To address these underlying issues, the policy brief offers a list of recommended actions to be taken by the international community. Those include immediate action: a ceasefire and unrestricted access to humanitarian aid; long-term solutions addressing underlying governance disparities and root causes of food insecurity; promotion of transparency, accountability, and responsible governance in the region; decisive intervention, focused on supplying aid directly to civilians, preventing misuse of aid addressing, as well as addressing documented instances of government misuse of aid.

Further information:

Click here for the full policy brief.

 

Organic farming leads to adaptations in the genetic material in plants



A study carried out at the University of Bonn shows how organically and conventionally farmed plants develop differently


UNIVERSITY OF BONN

The conventional population on the left and the organic barley on the right: 

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ONLY EXPERTS CAN SPOT THE DIFFERENCES WITH THE NAKED EYE. HOWEVER, HUGE DIFFERENCES CAN BE IDENTIFIED USING MOLECULAR GENETICS.

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CREDIT: PHOTO: AG PROF. LÉON/UNIVERSITY OF BONN




Plants adapt genetically over time to the special conditions of organic farming. This has been demonstrated in a long-term study conducted at the University of Bonn. The researchers planted barley plants on two neighboring fields and used conventional farming methods on one and organic methods on the other. Over the course of more than 20 years, the organic barley was enriched with specific genetic material that differed from the comparative culture. Among other things, the results demonstrate how important it is to cultivate varieties especially for organic farming. The results have now been published in the journal “Agronomy for Sustainable Development.”

At the end of the 1990s, Prof. Dr. Jens Léon started an experiment at the University of Bonn that he knew would run for a long period of time. His research group wanted to investigate the effects that farming conditions have on genetic material in plants. To this end, they carried out a complex long-term study over a period of 23 years at the Institute of Crop Science and Resource Conservation (INRES). “We first crossed high-yield barley with a wild form to increase genetic variation,” says Léon. “We then planted these populations on two neighboring fields so that the barley grew in the same soil and under the same climatic conditions.”

The only difference was the farming method. Conventional farming was used in one of the fields where the researchers used pesticides to combat pests, chemical agents to eliminate weeds and mineral fertilizers to help ensure a good supply of nutrients. The researchers took a more ecological sound approach in the other field: no pesticides, combating weeds using mechanical methods and fertilizing the soil with manure from stables. Some of the grains were retained every fall to sow the fields the following spring – using the organic grains on the organic field and the barley grown under conventional conditions on the comparative field. “We didn’t choose the grains based on any particular characteristics, however, but simply selected a small part of the harvest at random,” emphasizes Léon’s colleague Dr. Michael Schneider.

Analyzing genome development in time-lapse

The researchers also analyzed the genomes of the conventionally and organically farmed plants on a yearly basis. Every single gene can exist in a variety of different forms called alleles. For example, the human gene responsible for eye color exists in the alleles “brown” and “blue.” The frequency with which certain alleles arise in a population can change over generations. Environmental conditions are one factor that plays a role in this process: Alleles that ensure plants thrive in their current environment are usually found more and more frequently.

The researchers identified two interesting trends in their genetic tests: In the first twelve years, the allele frequency in the barley changed in the same way on both fields. “Our interpretation of this finding is that the very diverse populations caused by a cross with wild barley were adapting to the local conditions,” says Dr. Agim Ballvora, who also participated in the study. “After all, factors such as the climate, soil and especially length of day were identical for both populations.” However, the allele frequencies of both cultures diverged increasingly in subsequent years. In particular, the barley grown using organic farming methods developed gene variants that were less sensitive to a nutrient deficit or lack of water – i.e., alleles that influenced the structure of the roots. “One reason for this is presumably the strong variations in the availability of nutrients in organic farming,” says Léon.

Genetic heterogeneity facilitates the adaptation process

The conventionally farmed barley also became more genetically uniform over time, meaning that the genetic material in the individual plants grown on the field became more and more similar from year to year. However, the organic barley remained more heterogeneous. The allele frequencies of the organic culture also varied more widely over time. This resulted in some years being extremely favorable or unfavorable for some alleles. This could be because the environmental conditions fluctuate much more in organic farming than with conventional framing methods: If certain plant diseases take hold in one year, for example, the plants will rely most on those alleles that will protect them. The variability of the environmental forces acting on the plants seems to lead to greater genetic heterogeneity. “As a result, the plants are better able to adapt to these types of changes,” says Léon.

Overall, the results demonstrate the importance of cultivating varieties optimized for organic farming. As their genetic makeup has adapted to these conditions, they will be more robust and deliver higher yields. “Furthermore, it seems to make sense when cultivating plants to cross breed them with older or even wild varieties,” explains Léon. “Our data also indicate that this could even benefit conventional high-yield varieties.”

Funding:

The study was funded by the German Research Foundation (DFG).

Publication: Michael Schneider, Agim Ballvora and Jens Léon: Deep genotyping reveals specific adaptation footprints of conventional and organic farming in barley populations - an evolutionary plant breeding approach; Agronomy for Sustainable Development;
https://doi.org/10.1007/s13593-024-00962-8

 

Getting out of the political echo chamber



Psychological research offers strategies for healthy political discussions among people with opposing views




AMERICAN PSYCHOLOGICAL ASSOCIATION






Civilized political debates may seem increasingly out of reach as democracies across the world face rising polarization, but people still want to discuss issues with people they disagree with – especially those who present themselves as balanced and willing to seek solutions that work for everyone or open to learning new information, according to two studies published by the American Psychological Association. 

One study, published in the Journal of Experimental Psychology: General, examined how U.S. politicians and ordinary Americans with opposing political beliefs could share their ideas on divisive issues in a way that improved respect regardless of political party.

While reviewing a video series featuring real-world politicians solving political dilemmas designed to help voters evaluate the thoughtfulness of political candidates, researchers realized that the videos made viewers from the opposing party more open to learning about the politicians’ platform. They found this was because the videos made the politicians look balanced and pragmatic, two key characteristics of wise decision makers.

“It’s easy for us to think about members of both parties as being completely biased in favor of their side. But what happens so much of the time is that people talk past each other or show more interest in pointing out the ridiculous things the other side is doing rather than actually finding solutions,” said co-author Curtis Puryear, PhD, a post-doctoral researcher in the Kellogg School of Management at Northwestern University. “Our findings suggest that if you show you care about understanding the other side’s concerns, it goes a long way towards fostering respect.”

Puryear and co-author Kurt Gray, PhD, of the University of North Carolina at Chapel Hill, conducted eight experiments with more than 3,500 participants to test the effectiveness of political messages that relied on balanced pragmatism, an approach to conflict that focuses on showing concern for both sides’ interests while prioritizing practical solutions.

In one experiment, 505 Americans from different political parties evaluated a series of posts on the social media platform X by members of the U.S. House of Representatives. From a sample of more than 50,000 posts made by the representatives’ official accounts, the researchers selected 120 posts that discussed political issues without criticizing the opposing party and varied in how balanced and pragmatic each post was.

Each participant evaluated 30 posts, rating them based on how balanced and pragmatic each post seemed, the post’s overall tone, how divisive the post seemed, how much they respected the politician and how interested they would be in hearing more about the politician’s point of view.

The researchers found that posts that combined balance with pragmatism were the most likely to increase participants’ respect for a politician and their willingness to engage with them. Posts in which a politician mainly expressed a desire to find effective solutions improved participants’ respect regardless of party, but this was not as effective at garnering respect compared with politicians who also presented a balanced view of an issue. The benefits of balanced pragmatism for fostering respect were even more pronounced for posts discussing highly divisive issues, like immigration and abortion. 

“Logical analyses and strong arguments can make us see someone as competent, which is a trait we value in leaders and friends,” said Puryear. “But people also want leaders who understand their constituents, who care about their concerns, and have the practical knowledge to find solutions. These are the qualities of balanced and pragmatic leaders.”

In another experiment, researchers focused on whether ordinary Americans could also use balanced pragmatism to improve their political conversations. They recruited 211 Democrats in favor of decreasing deportations of undocumented immigrants and 85 Republicans in favor of increasing deportations. The participants were shown four comments written by participants in a previous experiment who argued their position on deportation using either balanced pragmatism or logical reasoning.

Overall, people were just as likely to say they wanted to have a conversation with someone who disagreed with their views on immigration when that person appeared balanced and pragmatic as they were to say they wanted to talk with someone from their own political party.

While it can be difficult for people to present their views on a divisive issue in a way that respects an opposing viewpoint and looks for a common solution, it could help solve the rising political animosity that we are facing, Puryear said.

“Being balanced and pragmatic takes effort,” he said. “But it is like building any other habit: Changing how we approach politics takes commitment and practice. We can each take it upon ourselves to do that.”

Another study, published in the Journal of Personality and Social Psychology, found that people could be willing to discuss controversial topics, such as gender-neutral language, with people who had opposing views when both express intellectual humility.

Intellectual humility is the recognition that your knowledge has limits and your beliefs could be wrong. It does not mean that someone who is intellectually humble is insecure or that they don’t have informed opinions, only that they are willing to acknowledge that they do not know everything.

“Intellectual humility could be an important aspect when trying to understand how to help people engage in these discussions on divisive issues,” said the study’s lead author, Larissa Knöchelmann, MSc, a research fellow and advanced PhD student at Philipps-Universität Marburg. “Political discussions are important for a democratic society. When people have conversations, they can learn about new perspectives, reduce misunderstandings and work together.”

The researchers conducted four experiments with more than 1,600 participants. In one experiment, they asked 451 Germans about their beliefs regarding the COVID-19 vaccine and whether it should be mandatory, a highly polarized debate in Germany when the experiment was conducted. They were then asked to imagine an online meeting with a new neighbor whose views on vaccination were either the same as or contrary to theirs. They also saw a statement from their neighbor that indicated whether controversial discussions were “boring” because the neighbor felt they knew enough about the topic already or “exciting” because it was an opportunity to learn more.

The researchers found that intellectually humble participants had warmer feelings and more positive evaluations toward groups of people with different political opinions. 

Additionally, intellectual humility shaped whether participants were willing to interact with others or not. While non-humble participants would rather talk with someone who shared their opinion, intellectually humble participants did not discriminate between those having the same or a contrary opinion. Overall, intellectually humble conversation partners were approached more and avoided less because participants perceived them as more likeable and the respective conversation as more calm, comfortable and open.

“Many German citizens have the impression that open political debates and an exchange of opinions are not possible anymore. This is especially the case when it comes to emotionally charged political topics,” said Knöchelmann. “Our research now shows that intellectual humility can help to make people more willing to engage with others.”

Articles: “Using ‘Balanced Pragmatism’ in Political Discussions Increases Cross-Partisan Respect,” by Curtis Puryear, PhD, Northwestern University, and Kurt Gray, PhD, University of North Carolina at Chapel Hill. Journal of Experimental Psychology: General, published online March 7, 2024.

“Effects of Intellectual Humility in the Context of Affective Polarization: Approaching and Avoiding Others in Controversial Political Discussions,” by Larissa Knöchelmann, MSc, and J. Christopher Cohrs, PhD, University of Marburg: Philipps-Universität Marburg. Journal of Personality and Social Psychology, published online May 13, 2024.


Contacts: Curtis Puryear can be contacted via email at cwpuryear12@gmail.com. Larissa Knöchelmann can be contacted via email at larissa.knoechelmann@uni-marburg.de

The American Psychological Association, in Washington, D.C., is the largest scientific and professional organization representing psychology in the United States. APA’s membership includes over 157,000 researchers, educators, clinicians, consultants and students. Through its divisions in 54 subfields of psychology and affiliations with 60 state, territorial and Canadian provincial associations, APA works to advance the creation, communication and application of psychological knowledge to benefit society and improve people’s lives.

 

More than half of Americans give to charity at checkout, survey shows


Young and diverse Americans are more likely to donate



BINGHAMTON UNIVERSITY

Checkout graphic 

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53% OF AMERICANS GIVE TO CHARITY AT CHECKOUT, AND YOUNG AND DIVERSE PEOPLE TEND TO DO IT MORE OFTEN, ACCORDING TO NEW RESEARCH FROM BINGHAMTON UNIVERSITY, STATE UNIVERSITY OF NEW YORK.

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CREDIT: BINGHAMTON UNIVERSITY, STATE UNIVERSITY OF NEW YORK





BINGHAMTON, N.Y. -- 53% of Americans give impulsively to charities at the checkout, and certain demographics tend to give more, according to a new survey conducted by faculty at Binghamton University, State University of New York. 

From supermarkets to retail, Americans are used to being asked for donations while making in-person or online purchases –  whether by rounding up, donating a set amount or purchasing a token. Industry reports reveal how money is being raised – checkout charity campaigns brought in almost $750 million in 2022, with campaigns through Walgreens, PetSmart and eBay being among the nation’s largest – but so far no one has developed a profile of who gives or has compared them to traditional donors. 

“There are always marketing reports that like to talk about how many people gave and how much it totaled to, but no one was talking about who to target when doing check-out asks for donations,” said Lauren Dula, an assistant professor of public administration and policy at Binghamton University. “The old-school donor profile of a moneyed, educated, older donor doesn't hold in this setting. It really is young and diverse people who are willing to add a little to the pot.”

Dula, along with Ruth Hansen from the University of Wisconsin-Whitewater, surveyed nearly 1,400 Americans on impulse giving. Survey respondents self-reported whether they had donated money at a store checkout over the previous year. If they answered “yes,” five more questions followed:

  • Did you round up your total charge?
  • Did you add an additional amount, such as $1 or $5?
  • Did you purchase a small token that would be displayed within the store?
  • Thinking of the last time you donated this way, how familiar were you with the charity?
  • How much money do you think you have donated in this way over the past year?

Over half the respondents (53%) said they had given to charity within the past year while paying for purchases. Those who give said they donate about $50 a year.

“Among those who donate, the most common form of donating is rounding up their total to the nearest dollar,” said Dula. “Another popular form was adding an amount, such as $1, to their order. Less common are people who purchase tokens for in-store display.”

But who donates? Demographics were found to play a role in whether or not people give at the register.

“Our survey found that women and Black respondents were the top-giving demographics with checkout charity,” said Dula. “Middle-class individuals under 50 who have not attended college were also more likely to donate. These patterns contrast with formal donors or those who give directly to charitable organizations, who are usually older, higher-earning college graduates.”

The total raised from checkout campaigns has increased yearly since 2012, but the frequency of donation requests at checkout may lead to complacency or annoyance, said Dula.

“The numbers could take a dip when impulse giving isn’t so impulsive anymore, and ‘no thanks’ will become easier to say,” she said.

The researchers are working to get funding to re-run their survey in a "post-COVID" situation. This survey was conducted in 2021, when many were still avoiding shopping in person. Dula said that they would like to learn more about how frequently respondents may be asked to donate in a week and their general opinion of these requests.

“We are just delving into the motivations behind the impulse-giving phenomenon,” said Dula. “Having a profile of a giver is nice because it helps retailers and charities understand their clientele better. Also, while big-name charities can raise a lot of money due to name recognition, these campaigns can go hyper-local and raise the profile of organizations doing fantastic work in the customer's own community.”

The paper, Who Will Spare a Dime? Impulse Giving Decisions at the Checkout,” was published in the Journal of Public and Nonprofit Affairs.