Share contracts are common in principal-agent relationships when returns are uncertain and it is costly to measure the agent's contribution. Well-known examples of these types of arrangements include sales commissions for real estate agents, contingency fees for attorneys, and cropshare...

Obesity is significantly more prevalent among non-Hispanic African-American (henceforth "black") women than among non]Hispanic white American (henceforth gwhiteh) women. These differences have persisted without much alteration since the early 1970s, despite substantial increases in the rates of...

In this paper we analyze the impact of classroom peers on individual student performance with a unique longitudinal data set covering all Florida public school students in grades 3-10 over a five-year period. Unlike many previous data sets used to study peer effects in education, our data set...

Aside from effects on nearby property values, research is sparse on how foreclosures may generate negative externalities. Employing a unique dataset that matches individual student records from Boston Public Schools - including test scores, demographics, home address moves, and school changes -...

With nominal interest rates at the zero lower bound, an important question for monetary policy is whether, as predicted in prior theoretical work, an increase in inflation expectations would boost current consumer spending. Using survey panel data for the period from April 2009 to November 2012,...

Previous studies of survey data for the United States and other countries find that on average women tend to understate their body weight, while on average both men and women overstate their height. Social norms have been posited as a potential explanation for misreporting of weight and height,...

Policymakers have an interest in identifying the differences in behavior patterns - namely, habitual caloric intake and physical activity levels - that contribute to demographic variation in body mass index (BMI) and obesity risk. While disparities in mean BMI and obesity rates between whites...

We test for differences across the two most recent NHANES survey periods (19881994 and 1999 2004) in self-perception of weight status. We find that the probability of self-classifying as overweight is significantly lower on average in the more recent survey, for both men and women, controlling...

Location-specific norms of behavior are a widespread phenomenon. In the case of medical practice, numerous studies have found that geographic location exerts a strong influence on the choice of treatments and procedures. This paper shows how the presence of social influence on treatment...

We develop a model of contracting in which individual effort choices are subject to social pressure to conform to the average effort level of others in the same risk-sharing group. As in related models of social interactions, a change in exogenous variables or contract terms generates a social...