The Impact of Search and Recommendation Systems on Sales in Electronic Commerce

The Internet and related technologies have vastly expanded the variety of products that can be profitably promoted and sold by online retailers. Furthermore, search and recommendation tools reduce consumers’ search costs in the Internet and enable them to extend their search from a few easily found best-selling products (blockbusters) to a large number of less frequently selling items (niches). As a result, Long Tail sales distribution patterns emerge that illustrate an increasing demand in niches. We show in this article how different classes of search and recommendation tools affect the distribution of sales across products, total sales, and consumer surplus. We hereby use an agent-based simulation which is calibrated based on real purchase data of a video-on-demand retailer. We find that a decrease in search costs through improved search technology can either shift demand from blockbusters to niches (search filters and recommendation systems) or from niches to blockbusters (charts and top lists). We break down demand changes into substitution and additional consumption and show that search and recommendation technologies can lead to substantial profit increases for retailers. We also illustrate that decreasing search costs through search and recommendation technologies always lead to an increase in consumer surplus, suggesting that retailers can use these technologies as competitive advantage.     

Loss Aversion,Audit Risk Judgments,and Auditor Liability

Abstract

I investigate how different legal regimes affect auditor's effort and investors' investment decisions when the auditor is subject to probability weighting and loss aversion, which are two important characteristics of Prospect Theory. Probability weighting encourages an auditor to overrate the audit risk and the likelihood of damages leading to inflated audit fees which could help to explain the BigN audit-fee premium. With loss aversion, an auditor is sensitive to the risk of damage compensation and, thus, tends to exert excessive caution which also generates excessive audit fees. Consequently, investors may choose not to hire an auditor and, as a result, may forego an otherwise profitable investment. These effects are more intense with a strict liability regime than with a negligence rule because with the latter, the auditor is not held liable when due care has been exerted. This removes the risk of incurring losses. The paper highlights the robustness of the negligence regime when preferences are unobservable.     

The impact of tax reforms on unemployment in a SMOPEC

This paper analyzes revenue-neutral tax reforms for a small open economy which is constrained to a balanced current account and whose producers have market power on the world market. We consider origin-based and destination-based commodity taxes as well as taxes on income, the payroll, and on an imported factor of production. Our main findings are the following. First, the strength, and for some parameter constellations, even the sign of the employment effect of tax reforms varies with the degree of openness of the economy. Second, the indeterminacy of the sign of the employment effect crucially hinges on the presence of an internationally mobile factor. The central mechanism underlying our results are adjustments of the real exchange rate which have repercussions on wage and price setting and therefore on employment.     

Campaign dynamics of cognitive accessibility of political judgments: measuring the impact of campaigns and campaign events using response latencies in two German rolling cross section studies

Do campaigns matter? Based on two rolling cross-section computer-assisted telephone surveys conducted in the run-up to the 2009 and 2013 German Federal Election, we test whether we can detect campaign effects on the accessibility of voters’ judgments: how do response latencies of political judgments evolve over the course of campaigns? The study uses response latencies, i.e. the standardized time it takes respondents to answer a survey question, as a proxy measurement of cognitive accessibility of political judgments. If campaigns do help voters to make up their minds, we should be able to observe changes at the implicit level of response latencies. Do people answer questions about their voting behavior and political attitudes faster as Election Day comes closer? Our results suggest that attitudes towards candidates and voting intentions become more cognitively accessible during campaigns whereas the accessibility of party identification is conditional on the contextual features of campaigns. In addition we find specific short-term effects of TV debates.     

Networks and network resources in technological innovation systems: Towards a conceptual framework for system building

Previous research has shown that formal networks can play a crucial role in the formation of technological innovation systems (TIS). Firms and other actors collaborate in formal networks not only to generate new knowledge but also to strategically create and shape supportive system resources such as technology specific R&D programs. This paper takes a closer look at the resources, which are developed and deployed by networks to facilitate the building up of a TIS. Networks rely not only on the organizational resources of their members but also on new resources developed at the network level including network governance structures, trust among network members, a common understanding of the strategic goals or a good reputation of the network. Our analysis shows that the capacity of networks to fulfill different tasks of system building especially depends on the network resources they are able to establish. With the differentiation of organizational, network and system resources we introduce a conceptual framework, which makes three important contributions. It highlights the strategic nature of (innovation) system building; it allows us comparing the contribution of different actors and formal networks in this regard; and it improves our understanding of how firm and system level processes are intertwined.     

Strategic responses to fuel cell hype and disappointment

This article investigates the interplay of expectation dynamics and innovation processes at the level of organizations and at the innovation system level. We examine how different kinds of organizations contributed and responded to a recent hype and disappointment cycle in the field of stationary fuel cells. Among others, we trace how innovation and discourse activities changed and we explain the observed differences in strategic responses. We show that the sensitivity of organizations to expectation dynamics depends on at least three factors: the strategic embedding of the new technology, the organization's dependence on external legitimacy and its role in the innovation system. Moreover, we show that – in their aggregation – strategic responses affected the level of the technological innovation system as well. Not only did the pace and direction of innovation activities change, but structures such as actor constellations and institutions were also modified. Our study thus provides insights into the interplay of expectation and innovation dynamics, which is important for our understanding of larger transformation processes, e.g. toward more sustainable modes of energy supply.     

On Stephen Parsons' Philosophical Critique of Transcendental Realism

This paper replies to Stephen Parsons' critique of Tony Lawson's Economics and Reality recently published in this journal. The topics addressed include Lawson's critique of empirical realism; Lawson's definition of 'structures'; theories of truth; the relationship between mainstream economics and empirical realism; and the possibility of naturalism .     

Information,Knowledge and Agency: The Information Theoretic Approach and the Austrians

Both the Information Theoretic Economics and Austrian Economics investigate the impact on market activity of problems of information and knowledge. The conceptions of information and knowledge they employ, however, as well as their respective views on and treatment of economic agency, are quite different. The purpose of this paper is to examine these differences, not primarily from an abstract philosophical point of view, but by looking at substantive examples of the economics offered by the two approaches. An attempt is made to explain the Austrian preference for non-formalist approaches to economic analysis.