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Homelessness: A Preliminary Evaluation of an Effort to End Homelessness Durham County, NC

By Alexander Tilley

The Durham Center is the public agency in Durham County responsible for connecting persons who are homeless or at risk of homelessness with the services that they need. In February of 2008 the Durham Center began to perform Care Review, where a 10-person Care Review team meets with an individual to develop a personalized system of care to place that person in permanent and/or stable housing and/or keep them there. Key indicators for successful placement by 3 months after initial review are access to prescription medicine services, age, race, primary medical home, and steady income.

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Advisor: Leslie Curtis

Multiparty Bargaining Strategies Comparing Nash Bargaining Payoffs of Bilateral and Multilateral Negotiation Strategies during Conflict Bargaining

by Alexander Crable

2003, the United States and North Korea have been at odds over the creation and continuation of a North Korean nuclear weapons program. While North Korea lobbies strongly for these differences to be sorted out through bilateral negotiations between the two nations, the United States refuses to partake in any negotiations other than the multilateral Six-Party Talks. Seeking to determine if the bargaining framework (bilateral or multilateral) between several economic agents might grant one or more agents a strategic advantage, we developed a three-player bargaining model for both a single multilateral negotiation and for a series of bilateral negotiations involving all three players. We also included in our model “conflict coefficients” which can simulate disagreement erupting into damaging conflict between two players. Hence, our model can further simulate nations on the brink of armed conflict, companies at risk of entering a price war, or other scenarios where players might cause a
decrease in each other’s initial wealth or utility. Conflict coefficients were designed in such a way that they can be removed from the model effortlessly to attain more general results. We concluded that there are indeed strategic advantages and disadvantages of multilateral and bilateral bargaining games for each player depending on their disagreement points and the surpluses being divided. In cases of conflict bargaining, expected payoffs for each player and preferred bargaining framework are further affected by their own conflict coefficient and those of the other players.

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Advisor: Huseyin Yildirim

Driven to Cheat: A Study on the Drivers of Dishonesty—through the Game of Golf

By Scott McKenzie

People like to think of themselves as more honest than the person sitting next to them. In practice, this cannot always be the case. Through two experiments, we investigated behavior in golf—a sport of self-governance, where the player is frequently confronted with opportunities to bend the rules and the score. Our research shows that people believe the average person will cheat more often than they themselves do, responding more strongly to both a decision’s perceived degree of dishonesty and the likelihood of being caught. We also found that altering the level of a competition did not change people’s beliefs about their dishonest behavior, even though cheating was directly related to competitiveness. In general, controlling for certain characteristics produces consistent predictions of reported cheating levels, and adding certain external circumstances drastically changed participants’ perceptions of dishonesty. People like to think of themselves as being in complete control of their decisions, but we will show that their perceptions can be changed without actually altering the terms of the decision.

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Advisor: Dan Airely

Caught Red-Handed: Corporate Labor Practices and the Investigatory Media, a New Look at Corporate Social Responsibility

By Jessica Lohrman

Firm self-regulation with regards to illegal and unethical labor practices has become a significant trend recently, as firms face possible negative exposure from the investigatory media. This paper provides a theoretical analysis of the determinants corporate labor practices and the role played by the investigatory media in firm self-regulation. The model finds that firms, when facing a media investigation, are no more likely to use unethical labor regardless of how cost effective it is. Instead, the firm is actually driven towards certain labor choices based upon the parameters of the investigatory media’s profitability. This communicates the importance of outside monitoring bodies on the road towards improved global labor standards.

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Advisor: Huseyin Yildirim

An Investigation into the Interdependency of the Volatility of Technology Stocks

By Zoraver Lamba

This paper examines the contemporaneous and dynamic relationships between the volatilities of the technology stocks in the S&P 100 index. Factor analysis and heterogeneous autoregressive regressions are used to examine contemporaneous and dynamic, inter-temporal relationships, respectively. Both techniques utilize high frequency data by measuring stock prices every 5 minutes from 1997-2008. We find that a strong industry effect explains the bulk of the volatility of the technology stocks and that the market’s volatility has very low correlation with the stocks’ volatility. Further, we find the market’s volatility has insignificant predictive content for the stocks’ volatility. The stocks themselves contain large quantities of unique predictive content for each other’s volatilities.

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Advisor: George Tauchen

Causal Inference and Understanding Causal Structure

By Alex Wang

This thesis aims to show that explicit understanding of possible causal structures often aids in inferring the true causes from data. This is done by first understanding that causes are chains of counterfactual dependence. Insofar as experiments, active or natural are not perfect, data can easily support false counterfactuals. Even those tools especially designed to identify unbiased estimates, like instrumental variables, often fail. Causal structure explains the failure of these tools, but more importantly allows us to better identify which counter factuals to reject or accept.

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Advisor: Kevin Hoover

A Bargaining Theory of the “Edwards’ Effect” in the 2007-8 Democratic Presidential Primary

By Alex Li

2008’s Democratic Presidential Primary will go down as one of the most competitive races in recent history. Two candidates, Senators Barack Obama (Illinois) and Hillary Clinton (New York), fought a see-saw battle to obtain enough delegates/vote-shares for the Democratic nomination. Although the race eventually dwelled down to these two players, for a while it was a dynamic three-player-race with Senator John Edwards (North Carolina) in the fold. During that time, many people were puzzled by Edwards’ insisting on staying in the race even when he had no foreseeable chance of becoming the party’s eventual nominee. In this honors thesis, I construct a theoretical model to explain Edwards’ reason for staying in the race. My model found that if Edwards attains a certain amount of vote-shares, depending on the external circumstances, he could have pushed the election into a backroom negotiation phase. In this phase, he would have become the most pivotal player as his relatively low amount of vote-shares would ironically turn him into the player with the greatest negotiating power. This could have allowed him to come out of the backroom negotiation with a final prize value that would have exceeded the efforts he inputted. My paper coins this as “The Edwards Effect” and explores the ramifications and conditions for its existence.

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Advisor: Huseyin Yildirim

Running Head: GENDER DIFFERENCES IN ASSET ALLOCATION: Rational Lifetime Investment Strategies: Gender Differences in the Allocation of Assets in

By Chase Lancaster

Previous research has demonstrated that women have greater risk aversion than men. Controlling for age, education, family size, income, self-reported financial risk tolerance, and occupation, this study examines the impact of gender on asset allocation decisions in retirement accounts. Our findings suggests that after accounting for a large number of factors, single women tend to choose more conservative investment allocations in their retirement accounts than do single men. However, within married households, no significant gender differences in asset allocation were found. Spousal influence within married couples was examined and seemed to explain away gender differences for married households.

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Advisor: Marjorie McElroy

Individual Incentives within Team Competitions

By Lisa Lam

This paper develops a theoretical model to show the effects of simultaneously having both a competition between groups and one among the individuals of a tournament. The players are divided up among teams and compete for a at bonus for winning the team competition. At the same time, their efforts also determine if they will win another at bonus from winning the individual game among all
the tournament’s players. With the use of a specific team production function demonstrating substitution among the player’s efforts, the individual award seems to garner more overall group output than the group award. Under a specific production function demonstrating complementary efforts, players seem to be indifferent between the group and individual award. Lastly, a general production function that incorporates a variable measuring the degree of substitution was analyzed. The analysis showed that an individual award was beneficial to increasing overall team effort. The results imply that the payment scheme should be structured in a way that allocates larger individual rewards when the team efforts are more substitutable.

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Advisor: Huseyin Yildirim

Do Medical Malpractice Reforms Affect Health Care Costs and Outcomes?

By Matt Johnson

The impact of medical malpractice reforms on the cost and quality of health care is of great interest to policy makers. This study examines national data on malpractice reforms implemented and health care provided to Medicare beneficiaries between 1995 and 2004. State-level reforms’ effect on health care expenditures and outcomes is determined in four disease-based populations. Reforms are shown not to have any meaningful impact on six-month expenditures or outcome measures in the majority of cases. Policymakers considering tort reforms to restrain the growth of health care expenditures are advised to concentrate on alternative measures.

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Advisor: Frank Sloan

Questions?

Undergraduate Program Assistant
Matthew Eggleston
dus_asst@econ.duke.edu

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