Let’s cut to the chase: “The overwhelming majority of murders in the United States involve guns,” says economist Jens Ludwig. “And in fact, most of the difference in overall murder rates between the United States and other countries are due to murders with guns.” This may seem intuitively obvious to outside observers, but studying guns within the United States has long been a fraught endeavor, and the amount of research isn’t commensurate with the impact on U.S. society. That said, Ludwig has taken on exploring the roots of American gun violence, work that serves as grist for the Crime Lab he directs at the University of Chicago and for many of his books, including his latest, Unforgiving Places: The Unexpected Origins of American Gun Violence. What’s he’s found is that the folk wisdom around gun violence doesn’t rally hold up to the evidence. In this Social Science Bites episode, he explains to interviewer David Edmonds how – using insights about ‘system one’ and system two’ thinking developed by Daniel Kahneman – cognition in individuals has more explanatory power than traditional variables like poverty, education and environment. “I think system one plays an underappreciated role in all interpersonal violence, all of the issues, and this way of seeing what is driving violent behavior among people is equally true for knife violence in the UK and on and on,” Ludwig says. “So I think this is really a universal thing about people's behavior. This sort of frame on the problem helps make sense of a bunch of patterns in the data.” Ludwig is the Edwin A. and Betty L. Bergman Distinguished Service Professor at the University of Chicago, Pritzker Director of the Crime Lab and codirector of the Education Lab at that campus, and codirector of the National Bureau of Economic Research’s working group on the economics of crime. He and his labs are routinely recognized for their work. The Crime Lab in 2014, for example, received a MacArthur Award for Creative and Effective Institutions, while eight years earlier Ludwig himself was awarded the Association for Public Policy Analysis and Management’s David N. Kershaw Prize for Contributions to Public Policy by Age 40. Some of the books he’s co-authored or co-edited include 2000’s Gun Violence: The Real Costs, 2003’s Evaluating Gun Policy, and 2012’s Controlling Crime: Strategies and Tradeoffs.

A new people has emerged in the digital age, that of ‘internet famous’ celebrities. And that new people has a class of social scientist focused on studying them, the digital anthropologist. Crystal Abidin, a professor at Australia’s Curtin University and founding director of the Influencer Ethnography Research Lab there, is such as digital anthropologist. Her research covers influencers – both adult and child and the general pop culture centered on social media, especially in the Asia Pacific region. In this Social Science Bites podcast, Abidin offers interviewer David Edmonds a metaphor to understand how her cyber-ethnography and digital anthropology work in practice. “I often think of anthropologists as Mars rovers that you throw into these unknown planets, and slowly but surely, we roll around the planet looking for bits of data, bits of material that might be new or novel. We're not going for quantity and volume at this scale. We're looking for what's neglected, unseen, sidelined by the margins, not yet mainstream. And we're measuring how much of these things are characteristic of the planet and worthy of study. … [A]s an anthropologist, given that my fidelity is to people and their cultures, I don't always only go for the shiniest, most mainstream thing. I often look for what's left behind.” In this conversation, though, Abidin talks about something very shiny indeed – those professional internet celebrities known collectively as “influencers.” She explains how while the top influencers do generate the paydays seen in popular media, the ecosystem extends down to individuals who are spending their own money in hopes of someday making it big. She also draws a distinction between influencers and creators, and also between influencers and memes.  Abidin also dives into regional differences in influencer culture, using her own detailed analysis of Asia Pacific influencer cultures, to explore regional differences that should be understood when assessing content on global platforms. “[I]f we were to discount the hegemony of American popular culture and their stronghold and a lot of social media, the palette is so diverse, the markets are so varied, that trends go in many different directions. So we need to sometimes think about who we are speaking about, what the superpower of the day is, and whenever we make these generalizations, what are the limitations? Who's not included in them?” In addition to her role at Curtin, Abidin founded the TikTok Cultures Research Network and is an affiliate researcher with the Media Management and Transformation Centre at Jönköping University. She was named an Australian Research Council DECRA Fellow for 2019 to 2024. Currently the editor-in-chief of Media International Australia, she has written or edited a number of books that bridge popular concerns with academic rigor, including 2018’s Internet Celebrity: Understanding Fame Online and this year’s Influencer Marketing: Interdisciplinary and Socio-Cultural Perspectives (co-edited with Lauren Gurrieri and Jenna Drenten),

Katy Milkman, a Professor at The Wharton School and co-founder of the Behavior Change for Good Initiative, dives into the intriguing world of behavior change. She discusses overcoming psychological barriers like present bias and impulsivity, offering strategies such as temptation bundling. Katy also shares insights on the effectiveness of financial incentives in establishing exercise habits and the power of bite-sized goals for sustained progress. Additionally, she highlights how social accountability can significantly enhance fitness attendance and improve academic success.

Janet Currie, a prominent economist and expert in child development from Princeton University, delves into the critical role of early interventions in shaping children's futures. She highlights how programs like Head Start and Sure Start create lasting benefits for disadvantaged youth. Currie argues that investing more directly in children yields better outcomes, even advocating for health coverage as a cost-saving measure. Her insights underscore the importance of prioritizing children's needs and overcoming political challenges to secure effective social programs.

In this conversation, Joshua Greene, a Harvard psychologist and neuroscientist, delves into the intricacies of effective charitable giving. He compares the impacts of different charities, revealing surprising disparities in effectiveness. Greene emphasizes the emotional vs. rational factors in donations, advocating for a balanced approach that incorporates both local causes and high-impact organizations. He also discusses the psychological benefits of giving and innovative ideas for improving donation strategies, including a novel platform designed to enhance donor satisfaction.

Julia Ebner, an investigative journalist and postdoctoral researcher at the University of Oxford, shares her insights on violent extremism. She recounts her experiences infiltrating extremist groups, revealing their recruitment tactics and the shifting landscape of radicalization, particularly among youth. Ebner discusses the rise of 'gamified terrorism' and how gaming culture is exploited for recruitment. She emphasizes the psychological dynamics of identity fusion and conspiracy beliefs, underlining the urgent need for effective interventions to combat these phenomena.

Nick Camp, a social psychologist from the University of Michigan, explores the intricate relationship between citizens and the criminal justice system. He discusses how encounters between law enforcement and individuals can foster distrust, particularly within African American communities. Camp highlights the transformative impact of George Floyd's murder and the biases linked to defendants' names. He emphasizes the need for transparency through body camera footage and innovative training to build trust and improve interactions between police and citizens.

Daron Acemoglu, an economist at MIT, discusses the impact of artificial intelligence on society. He argues that automation can be beneficial if it creates new tasks rather than merely replacing jobs. Acemoglu cautions against excessive automation and the power consolidation of tech giants. He emphasizes the need for training and education to prepare workers for a changing job landscape. The conversation navigates the balance between capital interests and state intervention, advocating for a future that ensures technology serves everyone fairly.

How much of our understanding of the world comes built-in? More than you’d expect. That’s the conclusion that Iris Berent, a professor of psychology at Northeastern University and head of the Language and Mind Lab there, has come to after years of research. She notes that her students, for example, are “astonished” at how much of human behavior and reactions are innate. “They think this is really strange,” she tells interviewer David Edmonds in this Social Science Bites podcast. “They don't think that knowledge, beliefs, that all those epistemic states, could possibly be innate. It doesn't look like this is happening just because they reject innateness across the board.” This rejection – which affects not only students but the general public and sometimes even social and behavioral scientists -- does have collateral damage. So, too, is misinterpreting what the innateness of some human nature can mean. “[I]f you think that what's in the body is innate and immutable, then upon getting evidence that your depression has a physical basis, when people are educated, that psychiatric disorders are just diseases like all others, that actually makes them more pessimistic, it creates more stigma, because you think that your essence is different from my essence. … [Y]ou give them vignettes that actually underscore the biological origin of a problem, they are less likely to think that therapy is going to help, which is obviously false and really problematic” Berent’s journey to studying intuitive knowledge was itself not intuitive. She received a bachelor’s in musicology from Tel-Aviv University and another in flute performance at The Rubin Academy of Music before earning master’s degrees in cognitive psychology and in music theory – from the University of Pittsburgh. In 1993, she received a Ph.D. in cognitive psychology from Pittsburgh. As a researcher, much of her investigation into the innate originated by looking at language, specifically using the study of phonology to determine how universal – and that includes in animals – principles of communication are. This work resulted in the 2013 book, The Phonological Mind. Her work specifically on innateness in turn led to her 2020 book for the Oxford University Press, The Blind Storyteller: How We Reason About Human Nature.

Do policies built around social and behavioral science research actually work? That’s a big, and contentious, question. It’s also almost an existential question for the disciplines involved. It’s also a question that Megan Stevenson, a professor of law and of economics at the University of Virginia School of Law, grapples with as she explores how well randomized control trials can predict the real-world efficacy of interventions in criminal justice. What she’s found so far in that particular niche has echoed across the research establishment. As she writes in the abstract of an article she saw published in the Boston University Law Review: "This Essay is built around a central empirical claim: that most reforms and interventions in the criminal legal space are shown to have little lasting effect when evaluated with gold standard methods. While this might be disappointing from the perspective of someone hoping to learn what levers to pull to achieve change, I argue that this teaches us something valuable about the structure of the social world. When it comes to the type of limited-scope interventions that lend themselves to high-quality evaluation, social change is hard to engineer. Stabilizing forces push people back towards the path they would have been on absent the intervention. Cascades—small interventions that lead to large and lasting changes—are rare. And causal processes are complex and context-dependent, meaning that a success achieved in one setting may not port well to another." In this Social Science Bites podcast, Stevenson tells interviewer David Edmonds that “the paper is not saying ‘nothing works ever.’ It’s saying nothing works among this subset of interventions, and interventions, as we talked about, are the type of interventions that get studied by randomized control trials tend to be pretty limited in scope. You can randomly allocate money, but you can’t randomly allocate class or socioeconomic status.” Despite this cautionary finding in her research. Stevenson hasn’t despaired about her career choice or that of other social and behavioral scientists. “Many of us are in this line of work because we care about the world,” she notes. “We want to make the world a better place. We want to think about the best way to do it. And this is valuable information along that path. It’s valuable information in that it shuts some doors. … So keep trying other doors, keep experimenting.”