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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.
Advisor: Leslie Curtis
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.
Advisor: Dan Airely
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.
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.
Advisor: Kevin Hoover
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.
Advisor: Marjorie McElroy
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.
Advisor: Frank Sloan