Tag Archives: Public health

The Impact of Pollution Exposure on Educational Outcomes and Inequality

Upcoming Journal of Human Resources article uncovers the hidden effects of pollutants on cognitive development and academic performance in adolescents

Journal of Human Resources Fall 2019 current issue cover

Increasing environmental consciousness means that more people are reaching for metal straws, but we may not be aware of a much larger issue: the hidden toxins in the air. New research set to appear in the upcoming issue of the Journal of Human Resources suggests that pollutants from local Toxic Release Inventory (TRI) sites may impact the productivity and educational development of students in nearby schools.

Over the past four years, Claudia Persico, an assistant professor at American University, evaluated over one million elementary, middle, and high school students in Florida using their Florida Comprehensive Assessment Test (FCAT) scores, their level of academic success, and general wellness. With over 30% of schools in Florida existing within one mile of a TRI site, exposure to air pollution was found to be associated with lower test scores and a greater chance that students will be suspended from school, have greater numbers of absences from school and perform lower on their FCAT exams. Persico expanded on these results to determine if different proximities to TRI sites affected grade repetition, behavior, and health over time. When students’ records were examined, it was revealed that those who had been exposed to the pollution for a greater cumulative time had lower attendance records and more health concerns.

Persico joined us to discuss the genesis of her interest in this topic and the larger implications of the study. To learn more, read the full Journal of Human Resources preprint article, “The Effects of Local Industrial Pollution on Students and Schools.”

1. How did you decide to pursue this topic? What spurred this study?

I used to study the neurobiology of autism at the Boston University School of Medicine, but I became interested in why low-income children perform so much worse in school and are more likely to have disabilities. Because the developing brain is so vulnerable to the environment, this got me interested in studying pollution.

It turns out that in 2014 alone, Toxic Release Inventory (TRI) sites in America (which represent only one type of industrial plant) released 3.95 billion pounds of (untreated) toxic chemicals into the air, land, and water, out of 25.45 billion total pounds of toxic chemicals created in production-related wastes. Although we do not currently have comprehensive evidence on which pollutants are most harmful, the evidence we do have is worrisome and suggests a source of inequality that has not yet been explored in depth. Namely, since African American, Hispanic, and low-income families are more likely to live and attend school in close proximity to sources of pollution like toxic waste and TRI sites, where housing is less expensive, it is possible that exposure to pollution—which more affluent families can avoid because they can afford more costly housing—is one mechanism through which poverty produces negative cognitive and health outcomes over time.

2. You note that about 30 percent of children in Florida live within one mile of a TRI site. Is Florida an extreme case? How are the effects of pollutants on cognitive development applicable to other areas of the United States and the world?

There are currently about 21,800 TRI sites operating across the United States and the Environmental Protection Agency estimates that 59 million people (about 19 percent of the population) live within one mile of a TRI site (EPA 2014). We find that nearly 22 percent of all public schools were within one mile of a TRI facility in 2016 serving more than 11 million public school students.

While other countries don’t call their factories TRI sites, it is likely that my findings could generalize to power plants, pharmaceutical industry, chemical, metal, and concrete manufacturers, as well as other factories that produce pollution containing carcinogens or known developmental toxicants worldwide. It is difficult to know how many people this would affect given that there isn’t a central database for international pollution, but my guess is that many people are affected.

3. What is one takeaway from your article that you’d like to communicate to non-scholars (or policymakers)?

These findings have strong implications for where we locate schools, playgrounds, public housing and places children or pregnant women congregate. For a long time, we have known that neighborhoods matter to children’s long-term outcomes. We are starting to realize that pollution is one major reason why this is the case, that pollution might drive more inequality than we are comfortable with, and that the true costs of pollution are only beginning to be understood.

4. To what extent do you feel that your research could inspire change in policy?

I think policymakers are starting to be interested in these findings, and I am optimistic about the future. While the land near TRI sites is cheaper to build a school on in the short run, the truth is that these sites might jeopardize the very mission of the schools located there. This also says nothing of the long-run costs on the children exposed to this type of pollution. In the back of the envelope calculation, we find that being exposed to TRI pollution in school leads to a US$4,361 decrease in lifetime income per person (in present value terms). With 436,088 children in Florida ever attending school within one mile of an operating TRI site during this sample period, this result implies US$1,875,178,400 in lost lifetime earnings.

5. Will you continue to pursue similar questions or will you take your research in another direction?

Yes, I am pursuing several new projects about the true costs of pollution. For example, I have another new working paper (along with David Simon and Jenni Heissel) in which we compare students who have to switch from elementary to middle school or from middle school to high school as they progress through the school system. We compare children who switch from a school that is upwind from a highway to a school that is downwind of a highway, and again find that highway pollution affects students’ test scores, behavior, and absences. Children who attend school near a major highway are again more likely to be low income or minority than children attending school elsewhere.

**Figure 1. Locations of Toxic Release Inventory and Superfund sites in the United States in 2015.**

Note: Toxic Release Inventory facilities are shown in blue and sites on the Superfund National Priorities List are shown in red.

Source: National Institutes of Health, Department of Health and Human Services. https://toxmap.nlm.nih.gov/toxmap

Claudia Persico is an applied policy scholar whose research focuses on environmental policy, inequality, health and education policy using causal inference methods. Persico is also an IZA Research Affiliate, and a Research Affiliate with the Institute for Policy Research at Northwestern University. Her research has recently been featured in the Quarterly Journal of Economics, the Journal of Labor Economics, and the Journal of Human Resources. Her current work examines the social and biological mechanisms underlying the relationships between poverty, the environment, and children’s cognitive development and health. In particular, much of her current research focuses on how early exposure to environmental pollution can cause inequality by affecting child health, development, behavior, and academic achievement. She has also studied how school funding affects long term outcomes, how school segregation impacts racial disproportionalities in special education, and how childhood exposure to pollution affects academic outcomes. Her research has been covered by the New York Times, the Washington Post, NPR, the Atlantic, and many other major media outlets. She was formerly an Assistant Professor at the University of Wisconsin-Madison.

African Studies Association 2019

This week, the UW Press has been exhibiting at the annual African Studies Association Conference in Boston. The conference is wrapping up, but if you’re attending, there’s still one last day to stop by booth 314 for discounts on books and journals. And if you’re not in Boston, here’s a look at our new and notable titles in African Studies.

Holding the World Together, edited by Nwando Achebe and Claire Robertson

Featuring contributions from some of the most accomplished scholars on the topic, Holding the World Together explores the rich and varied ways women have wielded power across the African continent, from the precolonial period to the present. This comprehensive volume, focusing on agency and avoiding stereotypical depictions, features essays on the representation of African women, their role in national liberation movements, their incorporation into the world economy, changing family and marriage systems, economic impacts on their lives and livelihoods, their unique challenges in the areas of health and disease, and their experiences with religious fundamentalism, violence, and slavery.

Health in a Fragile State, by John M. Janzen

Based on extensive field research in the Manianga region of the Lower Congo, Health in a Fragile State is an anthropological account of public health and health care in the 1980s and 1990s after the collapse of the Congolese state. This work brings into focus John M. Janzen’s earlier books on African health and healing, revealing the collaborative effort by local, national, and international agencies to create viable alternative institutions to those that represented the centralized state. With this volume, Janzen documents and analyzes the realignment of existing institutions and the creation of new ones that shape health and healing.

Throughout, Janzen explores the manner in which power and information, including science, are legitimized in the preservation and improvement of health. Institutional validity and knowledge empower citizens and health practitioners to gain the upper hand over the region’s principal diseases, including malaria, tuberculosis, typhoid, and HIV/AIDS.

African Economic History, edited by Mariana Candido, Toyin Falola, Toby Green, and Paul E. Lovejoy

African Economic History publishes scholarly essays in English and French on the economic history of African societies from precolonial times to the present. It features research in a variety of fields and time periods, including studies on labor, slavery, trade and commercial networks, economic transformations, colonialism, migration, development policies, social and economic inequalities, and poverty. The audience includes historians, economists, anthropologists, sociologists, political scientists, policymakers, and a range of other scholars interested in African economies—past and present.

Spirit Children, by Aaron R. Denham

Some babies and toddlers in parts of West Africa are considered spirit children—nonhumans sent from the forest to cause misfortune and destroy the family. These are usually deformed or ailing infants, or children whose births coincide with tragic events or who display unusual abilities. Aaron R. Denham offers a nuanced ethnographic study of this phenomenon in Northern Ghana that examines both the motivations of the families and the structural factors that lead to infanticide. He also turns the lens on the prevailing misunderstandings about this controversial practice. Denham offers vivid accounts of families’ life-and-death decisions that engage the complexity of the context, local meanings, and moral worlds of those confronting a spirit child.

Ghana Studies, edited by Carina Ray and Kofi Baku

Ghana Studies is the journal of the Ghana Studies Association, an international affiliate of the African Studies Association. Published annually, Ghana Studies strives to provide a forum for cutting edge original research about Ghana’s society, culture, environment, and history. All of the scholarly articles in Ghana Studies are peer-reviewed by two anonymous referees, coordinated by an editorial team based in both North America and Ghana. Since its first issue in 1998, Ghana Studies has published significant work by leading scholars based in Ghana, the United States, Canada, and Europe. In addition, Ghana Studies features occasional material, source reports, and book reviews. It also serves to provide official notice of fellowships and prizes awarded by the Ghana Studies Association.

Finding Empathy Through Troubling Stories

Aaron Denham, author of Spirit Children: Illness, Poverty, and Infanticide in Northern Ghana, comments on the importance of reading about distressing subjects. His book is published today in the University of Wisconsin Press series Africa and the Diaspora: History, Politics, Culture.

As I began writing about infanticide and the “spirit child” phenomenon in Northern Ghana, I became interested in how narratives of vulnerability and difficult human experiences can evoke powerful emotional and imaginative reactions in listeners and readers. Spirit children are, most often, disabled or ill children believed to be spirits sent to destroy the family. In their fear, and with limited treatment options, families occasionally hasten their child’s death.

When speaking about my research to friends and the public, my descriptions of families’ difficult decisions would often induce silence or provoke awkward replies. After one presentation depicting a family’s struggles to care for a spirit child, a well-intentioned literature professor suggested I bring an MRI machine to the remote savanna to scan the children to determine if they are indeed spirits. In other venues, some people vehemently denied the fact that infanticide was even occurring. The most powerful responses, however, come from parents with young children. I soon learned to temper my descriptions after a friend became distressed when I casually explained the grim reality one family faced. She vividly imagined her infant confronting similar circumstances.

Some authors and anthropologists have written about the value of attending to their own emotions and the anxieties that arise while conducting research. George Devereux stressed that ethnographers should scrutinize their reactions and blind spots, because our emotional worlds shape the ways we experience and interpret other people. This self-attunement is useful for readers too. How might our internal world shape our understanding of what we read?

When confronted with difficult material, our emotions and anxieties can enhance or limit comprehension. When I’ve discussed infanticide, I have found that people quickly gravitate to familiar but experience-distant sociobiological paradigms. These are often encapsulated in the question: “Considering their circumstances, doesn’t infanticide make good environmental sense?” Although at times reasonable, biofundamentalist accounts can foreclose deeper moral engagements with human experience. People defer to purely objective explanations to distance anxiety and move disturbing knowledge to more familiar and manageable terms. Devereux described this process as interpretive undercomprehension. This dilemma results in anxiously clinging to a point of view simply because the reader can “tolerate that particular interpretation, while considering all other (psychologically intolerable) interpretations unscholarly and erratic.” Jacques Lacan described a similar process that he termed the “passion for ignorance,” or the desire not to know, and to want nothing more to do with knowledge that is too intense.

Authors leverage readers’ internal worlds in many ways. In my writing, I wanted to bridge diverse cultural experiences to confront the perceived strangeness of infanticide. I wanted to encourage moments of mutual recognition, if not always an empathetic attunement. The challenge has been in finding a balance between presenting the visceral realities of people’s lives and developing emotionally tolerable narratives that facilitate a deeper level of understanding.

Readers can also contemplate their own reactions to emotional subjects. Stories that confront cultural difference and distressing practices can evoke anxiety or revulsion. In these cases, we can maintain our passion for ignorance, or we can take the opportunity to contemplate the reason for these sentiments and reflect on the complexity of our shared humanity. Challenging stories can help build empathy and inspire us to action. Moreover, as we open ourselves to difficult material, we do more than learn more about the lives of others. If we pay attention to what a text evokes within, we can ultimately come away learning more about ourselves.

Aaron R. Denham is the director of the Master of Development Studies and Global Health program and a senior lecturer in anthropology at Macquarie University in Sydney, Australia. He formerly was a mental health provider for children and families, a fellow of the American Psychoanalytic Association, and a volunteer with Engineers Without Borders.