David R. Just

TL;DR: In this article, one of two lunch lines in a cafeteria was arranged so as to display only healthier foods and flavored milk, and the results showed that sales of healthier foods increased by 18% and grams of less healthy foods consumed decreased by nearly 28%.

TL;DR: In this article, the authors argue that if tax credits are implemented alongside mandates, then tax credits subsidize fuel consumption instead of biofuels, which contradicts energy policy goals by increasing oil dependency, CO 2 emissions, and traffic congestion, while providing little benefit to either corn or ethanol producers.

TL;DR: In this article, the authors examined the application of this principle in a school lunchroom where healthier foods were made more convenient relative to less healthy foods and found that students increased their consumption of flavored milk, but flavored milk’s share of total consumption did not increase.

TL;DR: In this paper, the efficacy of alternative biofuel policies in achieving energy, environmental and agricultural policy goals is assessed using economic cost-benefit analysis, showing that government mandates are superior to consumption subsidies, especially with suboptimal fuel taxes and the higher costs involved with raising tax revenues.

TL;DR: This article argues that the most common approaches to empirical research fall on the ends of a spectrum of research approaches, and that the interior of this spectrum includes intermediary approaches such as field experiments and natural experiments and argues that choosing between lab experiments and field data usually requires a tradeoff between the pursuit of internal and external validity.