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Category Archives: O1

Short and Long-Term Impacts of a Large-Scale Natural Disaster on Individual Labor Outcomes: Evidence from the 2004 Indian Ocean Tsunami

By Tony sun

Abstract
Natural disasters are often highly disruptive to the livelihoods of impacted populations. This paper investigates the effects of the 2004 Indian Ocean tsunami on male wages and labor supply from its immediate aftermath into the long run. Using fixed effects models that account for individual-specific heterogeneity, I find evidence of significant real wage declines for workers from heavily damaged areas that persist beyond the short-term. This long-term wage effect contrasts with previous literature, particularly in the context of relatively less severe disasters. Male workers also increased their hours-of-work following the tsunami, which suggests reliance on labor markets to smooth income losses and shifted their labor towards less disrupted industries. Additionally, I document the heterogeneity of tsunami impact on wages and hours-of-work by birth cohort and education, as well as by industry and sector of employment.

Professor Duncan Thomas, Faculty Advisor
Professor Michelle P. Connolly, Honors Seminar Instructor

JEL classification: J2; J21; J30; O10; Q54

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A perfect storm: The effect of natural disasters on child health

By Cheyenne Danielle Quijano

Abstract
Typhoons and their accompanying flooding have destructive effects, including an
increase in the risk of waterborne disease in children. Using a spatial regression discontinuity
design, I explore the immediate to short-term effects of flooding as a result
of Typhoon Labuyo on the incidence of diarrhea and acute respiratory infection in the
Philippines by comparing children living in a flooded barangay (town) to children living
just outside of the flooded area. I build on the existing literature by accounting for
both incidence and intensity of the typhoon’s flooding in my model. I construct this
new flooding measure using programming techniques and ArcGIS by manipulating data
collected by the University of Maryland’s Global Flood Monitoring System. This data
as well as health data from the 2013 Philippines National Demographic Health Surveys
were collected the day after Typhoon Labuyo left the Philippines, providing a unique
opportunity to explore the immediate impact of the typhoon on child health. Most of
my results are insignificant, but subgroup analyses show that the effect of flooding on
waterborne disease incidence is less impactful in the immediate term following a flood
and more impactful in the medium-term. This is important, because understanding
the detrimental health effects of flooding is of utmost importance, especially because
climate change will only increase the frequency and intensity of natural disasters.

Professor Erica M. Field, Faculty Advisor
Professor Michelle P. Connolly, Faculty Advisor

JEL classification: I150, O120, O130, Q540

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Labor Market Effects of the Minimum Wage in South Korea

by Alec Ashforth

This paper analyzes survey data from businesses regarding individual worker earnings, hours, and characteristics from 1971 to 1998 in order to estimate the labor market effects of the minimum wage in South Korea. Since the minimum wage was only implemented in manufacturing, construction, and mining industries, we are able to compare earnings and hours of workers in these industries with workers in other industries using both a difference-in-differences and a synthetic control approach. Additionally, we test to see if the minimum wage had heterogeneous effects based on an individual worker’s gender, level of education, experience, and payment period.

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Advisors: Professor Arnaud Maurel, Professor Kent Kimbrough | JEL Codes: J31, J38, O15

Where Did the Money Go? Impact of the ECB’s Corporate Sector Purchase Program on Eurozone Corporate Spending

By Tina Tian   

Slow corporate growth and a lack of corporate investment has plagued European markets for the past decade. As a response, the ECB began the Corporate Sector Purchase Program (CSPP) in 2016 to provide liquidity to corporate debt markets through bond purchases. Four years after the start of the program, this paper assesses its impact by looking at how companies spent this money on a micro level. In particular, it looks at the impact of long-term debt on five expenditures (fixed assets and R&D, cash balances, short-term debt, cash to shareholders, and share buybacks). We test these hypothesized expenditures based on financial statement panel data from a selection of European firms whose bonds were purchased by the ECB. The results show an increase in financial expenditures including cash balances and short-term debt and a decrease in productive investment expenditures such as fixed assets and R&D. This indicates a lack of efficacy of the corporate bond purchase program as excess liquidity provided by the ECB went towards eurozone companies refinancing existing debt rather than investing in growth ventures.

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Advisors: Professor Connel Fullenkamp, Professor Kent Kimbrough | JEL Codes: G3, O16, E58

Social Capital and Financial Development after Economic Shocks: Evidence from Italy after the Financial Crisis of 2007-2009

By Sujay Rao & Ethan Lampert

Like traditional forms of capital, social capital – an intangible measure of an individual’s social networks, trust in institutions, and participation in civic life – has implications for personal and financial behavior. Individuals from educated, well established backgrounds with fruitful family ties may be more amenable to opening new lines of credit or investing in stock markets due to their trust in and connectedness with society. But what happens after a major economic shock, such as the financial crisis of 2008? Using Italy as a case study and panel data from the Survey of Household Income and Wealth, we find that social capital has significant effects on an individual’s credit card usage, informal borrowing, and choice to invest in securities.

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Advisors: Professor Grace Kim, Professor Michelle Connolly, Professor Giovanni Zanalda | JEL Codes: G01, G2, O1, D1, D14

The Impact of Microfinance on Women’s Empowerment: Evidence from Rural Areas of Uganda

By Sonia Maria Hernandez

Microfinance is the practice of extending small collateral-free loans to underserved populations in developing areas with no access to credit. The Village Savings and Loan Association (VSLA) randomized access to microfinance treatment for women in rural areas of Uganda and tracked outcomes through surveys. This research determines the impact of microfinance by analyzing outcomes over five dimensions of women’s empowerment, including decision making power, community participation, business outcomes, emotional wellness, and beliefs about women. The strongest results showed that access to the VSLA program empowered women in terms of business outcomes and decision-making power. This leads to the conclusion that microfinance can more easily impact how a woman behaves within the household than change how a woman behaves within the community.

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Advisors: Professor Kent Kimbrough, Professor Lori Leachman | JEL Codes: O1, O12, O35

Evaluating Economic Impacts of Electrification in Zambia

By Aashna Aggarwal

Energy poverty is prevalent in Zambia. It is one of the world’s least electrified nations with 69% of its citizens living in darkness, without access to grid electricity. Zambian government has a goal to achieve universal electricity access in urban areas and increase rural electrification to 51% by 2030. With its main goal to improve the quality of life and wellbeing of Zambians. Electrification is expected to have positive impacts on health, education and employment play an important role to achieve wellbeing, however, previous studies and analysis of renewable energy programs have found different, context-dependent results. To evaluate the impacts of electrification in Zambia I have used the Living Conditions Monitoring Survey (LCMS) of 2015 and applied two different estimation techniques: non-linear regressions and propensity score matching. My study finds that firewood consumption significantly decreases with assess to electricity and education has positive outcomes on grade attainment. I negligible effects on wage earning employment outcomes respiratory health outcomes. Based on these results I conclude that access to grid electrification does have certain positive impacts but empirical evidence is not as strong as the theoretical claims.

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Advisors: Dr. Robyn Meeks and Dr. Grace Kim | JEL Codes: C31; C78; O13; Q40

Sister competition and birth order effects among marriage-aged girls: Evidence from a field experiment in rural Bangladesh

By Stephanie Zhong

Early marriage before the age of 18 is prevalent among adolescent girls in Bangladesh, but the timing of marriage is not uniform across daughters within a household, with some sisters marrying earlier than others. Using survey data from a novel field experiment from rural Bangladesh, I find that girls ages 10-21 with lower birth order tend to be married at a younger age, even when controlling for confounding nature of household size on birth order. Additionally, girls with younger sisters are more likely to be married and at a younger age than girls with younger brothers. The findings on dowry are inclusive.

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Advisors: Dr. Erica Field and Dr. Michelle Connolly | JEL Codes: D13, J13, O15

Endogeneity in the Decision to Migrate: Changes in the Self-Selection of Puerto Rican Migrants before, during, and after the Great Recession

By Aasha Reddy 

Migrants self-select on characteristics such as income. We use the U.S. Census’ ACS and PRCS to study changes in selection patterns of Puerto Rican migrants to the to the U.S. mainland (50 states) before, during, and after the Great Recession (2005 to 2016). We construct counterfactual income densities to compare incomes of Puerto Rican migrants to the mainland versus incomes of island residents under equivalent returns to skill. We examine where Puerto Rican migrants to the mainland tend to fall in the island’s income distribution and find that Puerto Rican migrants tend to come from the top 20% of the island’s income distribution. This pattern remained stable with little to no effect of the Great Recession on selectivity patterns.

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Advisors: William Darity and Michelle Connolly | JEL Codes: J15, J61, O15

What Fosters Innovation? A CrossSectional Panel Approach to Assessing the Impact of Cross Border Investment and Globalization on Patenting Across Global Economies

By Michael Dessau and Nicholas Vega

This study considers the impact of foreign direct investment (FDI) on innovation in high income, uppermiddle  income and lowermiddle income countries. Innovation matters because it is a critical factor for economic growth. In a panel setting, this study assesses the degree to which FDI functions as a vehicle for innovation as proxied by scaled local resident patent applications. This study considers research and development (R&D), domestic savings, imports and exports, and quality of governance as factors which could also impact the effectiveness of FDI on innovation. Our results suggest FDI is most effective as inward direct investment in countries outside the technological frontier possessing adequate existing domestic investment capital and R&D spending to convert foreign investment capital and technological spillover into innovation. Nonetheless, FDI was not a consistent indicator for innovation; rather, the most consistent indicators across this study were R&D and domestic savings. Differences amongst income groups are highlighted as well as their varying responses to our array of causal factors.

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Advisor: Lori Leachman | JEL Codes: A10, B22, C82, E00, E02, O10, O11, O30, O31, O32, O33, O34, O43

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dus_asst@econ.duke.edu

Director of the Honors Program
Michelle P. Connolly
michelle.connolly@duke.edu