This chapter proposes an analysis of the role of advertising in the transmission of information in markets. It also describes how the economic analysis of informative advertising provides a satisfactory account of advertising practices and discusses the extent to which resorting to alternative...

R&D-intensive firms such as biotechnology and pharmaceutical companies follow very different corporate financial policies from firms in less R&D-intensive industries. To account for these differences, we propose an equilibrium model for such firms in which their capital structure, amount of R&D...

In markets with imperfect information and heterogeneity, the information technology affects the rate at which agents meet, which in turn affects the distribution of production technologies across firms. We show that in models for such markets there are typically multiple equilibria because...

The ENERGY STAR certification is a voluntary labeling that favors the adoption of energy efficient products. In the US appliance market, the label is a coarse summary of otherwise readily accessible information. Using micro-data of the US refrigerator market, I develop a structural demand model...

Solar technologies have been associated with private and social returns, but their technological potential often remains unachieved because of persistently low demand for high-quality products. In a randomized field experiment in Senegal, we assess the potential of three types of quality...

We study whether Amazon engages in self-preferencing on its marketplace by favoring its own brands (e.g., Amazon Basics) in search. To address this question, we collect new micro-level consumer search data using a custom browser extension installed by a panel of study participants. Using this...

Imperfect information about product attributes inhibits efficiency in many choice settings, but can be overcome by providing simple, lowcost information. We use a randomized control trial to test the effect of high-frequency information about residential electricity usage on the price elasticity...

I discuss the measurement of world poverty and inequality, with particular attention to the role of purchasing power parity (PPP) price indexes from the International Comparison Project. Global inequality increased with the latest revision of the ICP, and this reduced the global poverty line...