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Solar lanterns are promoted across rural Sub-Saharan Africa to improve both lighting in homes and educational outcomes. We undertake a randomized controlled trial in Zimba District, Zambia, to evaluate whether solar lanterns help children study more effectively and improve academic performance. Our research design accounts for potential income effects arising from the giveaways of lanterns and also “blinds” participants to the study’s purpose. We find no evidence that receipt of a lantern improved performance on important national examinations (even though an ex poststatistical power analysis demonstrates that the research should detect economically significant impacts, if present). We also do not observe impacts on self-reported study habits. Several features of Zimba District that are likely to exist in other developing regions appear to drive our results. First, flashlights are the dominant lighting source in rural Zambia rather than traditional options like kerosene lamps or candles. In such environments, solar lights may hold only limited appeal for prospective users. Second, our survey data suggests that other major barriers to educational attainment likely render improved energy access (whether through solar lanterns or otherwise) a relatively unimportant educational input. 

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Program on Energy and Sustainable Development
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Ognen Stojanovski
Ognen Stojanovski
Mark C. Thurber
Mark Thurber
Frank Wolak
Frank Wolak
George Muwowo
Kat Harrison
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Pui Shiau
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Pilot program was designed to first ground students in the basics of empirical research, then provide an opportunity to apply that knowledge while conducting fieldwork in an international setting.

 

The Freeman Spogli Institute for International Studies (FSI) and Office of International Affairs (OIA) launched a pilot collaboration last year to provide a rigorous, immersive teaching and training program for students interested in international fieldwork.  The result was a program that included a quarter-long course in the spring of 2015 followed by three weeks in Mexico during the summer to design and conduct a field research study. OIA spoke with Frank Wolak, the Holbrook Working Professor of Commodity Price Studies in Economics and Senior Fellow at FSI, to learn more about the project, titled International Field Research Training: Energy Reform in Mexico.

What was the impetus for designing a program for students with a field research component?

While students at Stanford have many opportunities to pursue independent research projects, they rarely have the opportunity to receive first-hand training in conducting interviews, research design and field implementation. With that in mind, we set out to design a program that would carry the students through the basics of empirical research and then give them the opportunity to apply that knowledge under close faculty supervision. Taking students out of the classroom and giving them the opportunity to see textbook methods in action is invaluable.

Our hope is that this training equips the students with the academic and logistical skills they need to execute their own robust research, be that for an honors thesis, a capstone project or an advanced degree.

How did the prerequisite course prepare students for working in the field? 

The Stanford course taught the basics of the design, implementation and interpretation of social science field research. Building on a basic knowledge of statistical methods and economics, the course first introduced observational field research and compared it with experimental field research. Significant attention was devoted to explaining what can and cannot be learned through each type of field research.

Topics covered included sample size selection, power and size of statistical hypothesis tests, sample selection bias and methods for accounting for it. Examples of best practice field research studies were presented as well as examples of commonly committed experimental design and implementation errors. Practical aspects of fieldwork were also covered, including efficient and cost-effective data collection, data analysis, teamwork and common ethical considerations.

After completing the quarter-long course on statistical research methods, the students, under the guidance of the Program on Energy and Sustainable Development's research team, adapted an education-based research intervention for the Mexican electricity sector. The purpose was to see if providing individuals with information about how their energy bill was calculated and simple ways to reduce household electricity consumption would cause household energy bills to go down.

What was a typical day for the students gathering research?

Research was carried out in the city of Puebla, a city of 1.5 million people about 150 kilometers (93 miles) southeast of Mexico City. The Stanford students collaborated with students from the Universidad Popular Autónoma del Estado de Puebla (UPAEP). For the first few days, the students all met at an UPAEP classroom space to design and review the survey tool, making revisions and conducting practice interviews.

Once oriented in Puebla, the students set out daily in research teams to interview randomly selected households in middle-income neighborhoods in Puebla. The students branched out from a central meeting place in teams of three, pairing two Stanford students with one UPAEP student.

In the field, the students all wore nametags and UPAEP baseball caps to make themselves identifiable as surveyors to households. They worked in the field for eight to 10 hours a day, taking about an hour break for lunch. In the first few days, they were able to collect 15-20 surveys a day, but as they became more comfortable with their pitch and knocking on doors, they were able to increase their yield to a high of 44 surveys in one day. At the end of two weeks, they completed over 260 surveys in just 10 days of fieldwork.

The students were also active on social media documenting their daily activities. For more on the student perspective, their activities and impressions of the project, check out their blog on the FSI website. 

What are the benefits for getting in-country field research experience?

There are a variety of situation-specific problems that are hard for any researcher to know fully without being immersed in the field. For example, one of the students' recommendations to improve energy efficiency was to switch household light bulbs from incandescent to compact fluorescents (CFL). This is a valid recommendation in the United States where most people still use incandescent bulbs in their homes, but – surprisingly to the team – most of the people interviewed had already converted to all CFLs in their home.

I was amazed with the students; the level of intellectual curiosity and engagement was impressive with ongoing discussions into the evening at times. The students were not only getting an in-country immersive experience while conducting research, but they were also developing critical thinking skills along the way.

Research aside, the in-country experience gave the students a keen understanding of how local residents live. The methodology employed for gathering data allowed the students to connect with many types of families, ranging from senior citizens living alone to multi-generational families living under one roof. Through direct contact with the community, the students developed an understanding of the local culture and learned local customs. 

Conducting international research at Stanford can be challenging. Where did you turn to for advice on how to structure your activity?

At FSI, we have a great wealth of experiential knowledge on conducting field research all over the world. In addition to consulting with faculty and research managers at FSI, OIA had been enormously helpful in connecting us with resources across campus and facilitating some of the trickier logistics, such as processing stipend payments to our international collaborators and navigating the human subjects approval process. OIA was also able to discern that Puebla was a viable option as a research site.

How would you characterize the success of the pilot program? 

The pilot program exceeded our expectations in the best possible ways. Much of its success was due to the work of Elena Cryst ,'10, program manager for FSI's Global Student Fellows Program, who also accompanied us on our trip. She was an invaluable team leader and organizer and worked tirelessly to ensure that both the research and logistical aspects of the trip ran smoothly.

We will definitely be offering the field research course and research project again. We hope to go to another part of Latin America next, such as Chile or Colombia. We are also still active in Mexico, with three of the students that went on the trip working for us as research assistants this academic year, analyzing the data as it comes in and developing a self-administered online version of the survey instrument with which we hope to reach thousands of households in Puebla.

In addition, Elena will be using our experiences from the Mexico pilot to inform other FSI field research programs in China, Guatemala, India and potentially new sites for next year.

 

This article was originally published in The Stanford Report on October 27, 2015.

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Health risks from poor malaria control, unsafe water, and indoor air pollution are responsible for an important share of the global disease burden—and they can be addressed by efficacious household health technologies that have existed for decades. However, coverage rates of these products among populations at risk remain disappointingly low. We conducted a review of the medical and public health literatures and found that health considerations alone are rarely sufficient motivation for households to adopt and use these technologies. In light of these findings, we argue that health education and persuasion campaigns by themselves are unlikely to be adequate. Instead, health policymakers and professionals must understand what users value beyond health and possibly reengineer health technologies with these concerns in mind.

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American Journal of Public Health
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Mark C. Thurber
Mark C. Thurber
Christina Warner
Lauren Platt
Xander Slaski
Xander Slaski
Rajesh Gupta
Grant Miller
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Programs to distribute improved biomass stoves have traditionally been unsuccessful, despite enormous potential health and climate benefits. This research note helps explain the reasons for this by considering three main prerequisites for technology adoption by the poor. The first success factor is motivation on the part of customers to adopt the new product. When motivation does not exist initially, it must be created through education, social marketing, or improved design. The second essential component is that the product be affordable, be it through disposable income, financing, or subsidies. Finally, the success of a product is dependent on the level of user engagement necessary to take advantage of it.

Improved cookstoves rank poorly on all three dimensions: their benefits are rarely valued highly by customers at the outset, they are expensive, and they require a significant change in lifestyle to be put into use.

These three potential barriers to adoption are relevant to any product aimed at consumers at the "bottom of the pyramid" in income. They help explain why some products (for example, Coca-Cola and cell phones) have penetrated markets rapidly while others such as cookstoves have achieved very limited penetration.

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Program on Energy and Sustainable Development, Working Paper #89
Authors
Xander Slaski
Xander Slaski
Mark C. Thurber
Mark C. Thurber
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Energy development, interpreted broadly to mean increased provision and use of energy services, is an integral part of enhanced economic development. Advanced industrialized societies use more energy per unit of economic output and far more energy per capita than poorer societies, especially those still in a preindustrial state. Energy use per unit of output does seem to decline over time in the more advanced stages of industrialization, reflecting the adoption of increasingly more efficient technologies for energy production and utilization as well as changes in the composition of economic activity (see, e.g., Nakicenovic 1996). And energy intensity in today's developing countries probably peaks sooner and at a lower level along the development path than was the case during the industrialization of the developed world. But even with trends toward greater energy efficiency and other dampening factors, total energy use and energy use per capita continue to grow in the advanced industrialized countries, and even more rapid growth can be expected in the developing countries as their incomes advance. The fact that expanded provision and use of energy services is strongly associated with economic development leaves open how important energy is as a causal factor in economic development. Development involves a number of other steps besides those associated with energy, notably including the evolution of education and labor markets, financial institutions to support capital investment, modernization of agriculture, and provision of infrastructure for water, sanitation, and communications. This is not just an academic question; energy development competes with other development opportunities in the allocation of scarce capital and in the allocation of scarce opportunities for policy and institutional reform.

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Program on Energy and Sustainable Development Working Paper #9
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Michael Toman
Barbora Jemelkova
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