AIDing Contraception: HIV and Recent Trends in Abortion Rates

Since the onset of HIV/AIDS awareness in the early 1980s, much attention has centered around the substantial negative effects of the disease throughout the world. This paper provides evidence of a secondary effect the disease has had on sexual behavior in the United States. Using a difference-in-differences estimation framework and state level data, we show that the perceived threat of HIV resulted in a drop in unwanted pregnancies, as demonstrated by a lower incidence of abortions. Our results suggest that each additional reported case of HIV per 1,000 individuals resulted in 85.5 fewer abortions per 1,000 live births

U.S. monetary policy and herding: Evidence from commodity markets

This paper investigates the presence of herding behavior across a spectrum of commodities (i.e., agricultural, energy, precious metals, and metals) futures prices obtained from Datastream. The main novelty of this study is, for the first time in the literature, the explicit investigation of the role of deviations of U.S. monetary policy decisions from a standard Taylor-type monetary rule, in driving herding behavior with respect to commodity futures prices, spanning the period 1990-2017. The results document that the commodity markets are characterized by herding, while such herding behavior is not only driven by U.S. monetary policy decisions, but also such decisions exert asymmetric effects this behavior. An additional novelty of the results is that they document that herding is stronger in discretionary monetary policy regimes.N/

Beauty Premiums Among Academics

This paper examines the effects of instructors’ attractiveness on student evaluations of their teaching. We build on previous studies by holding both observed and unobserved characteristics of the instructor and classes constant. Our identification strategy exploits the fact that many instructors, in addition to traditional teaching in the classroom, also teach in the online environment, where attractiveness is either unknown or less salient. We utilize multiple attractiveness measures, including facial symmetry software, subjective evaluations, and a novel, proxy methodology that resembles a “Keynesian Beauty Contest.” We identify a substantial beauty premium in face-to-face classes for women but not for men. While gender on its own does not impact teaching evaluation scores, female instructors rated as more attractive receive higher instructional ratings. This result holds across several beauty measures, given a multitude of controls and while controlling for unobserved instructor characteristics and skills. Notably, the positive relationship between beauty and teaching effectiveness is not found in the online environment, suggesting the observed premium may be due to discrimination