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The chapter reconstructs the methodological trajectory of Polly Hill. Crossing the boundaries between economics and anthropology, Hill’s work was simultaneously an epistemic challenge to development economics, and a testimony to the complexity and richness of economic life in what she called the “rural tropical world.” Drawing inspiration from the process that Mary Morgan referred to as “seeking parts, looking for wholes,” the chapter explores the evolving relationship between observational practice and conceptual categories in Hill’s work on West Africa and India. It is argued that fieldwork, the central element in Hill’s methodological reflection, served two main functions. Firstly, it acted as the cornerstone of her views on observation and induction, framing her understanding of the relationship between “parts” and “wholes.” Secondly, Hill used fieldwork as a narrative trope to articulate her hopeful vision for an integration of economics and anthropology, and later express her feelings of distance and alienation from the ways in which these disciplines were actually practiced.

Platforms in two-sided markets are known to provide subsidies to either buyers or sellers, in order to take advantage of cross-group externalities inherent in such industries. Online travel agents can be thought of as platforms facilitating trade between passengers and travel service providers (airlines). This chapter evaluates the effects of a buyer subsidy provided by one major US online travel agent – a low-price guarantee offered by Orbitz. We find evidence consistent with increased airline participation with this travel agent upon implementation of the low-price guarantee policy. Our results also confirm the theoretical claims that most-favored customer low-price guarantee policies are procompetitive.

This study traces the evolution of offered airfares on 50 busy routes on the US domestic market. Our approach differs from that in the literature in the following ways. First, we trace the lowest offered fares for specific round-trip itineraries, acknowledging both that many trips involve return travel and that the round-trip airfare is often not equal to the sum of the two one-way fares. Many previous studies (e.g., Escobari, 2009; Escobari & Gan, 2007) either looked at fare quotes for specific one-way flights or examined the lowest round-trip quote available. Second, our sample of half of the top 100 domestic routes includes itineraries from markets with varying number of competitors as well as from markets with and without the presence of low-cost carriers (LCCs). Third, we have collected fare quotes simultaneously from three leading online travel agents. Thus, our research design allows us to see whether any systematic airfare differences exist across the different online distributors of travel services.

Allocating budget optimally to marketing channels is an increasingly difficult venture. This difficulty is compounded by an increase in the number of marketing channels, a rise in siloed data between marketing technologies, and a decrease in individually identifiable data due to legislated privacy policies. The authors explore the rich attribution modeling literature and discuss the different model types and approaches previously used by practitioners and researchers. They also investigate the changing landscape of marketing attribution, discuss the advantages and disadvantages of different data handling approaches (i.e., aggregate vs. individualistic data), and present a research agenda for future attribution research.