Who will lead and who will follow: Identifying Influential Users in Online Social Networks

Along with the explosive growth of the phenomenon Online Social Networks (OSN), identifying influential users in OSN has received a great deal of attention in recent years. However, the development of practical approaches for identifying them is still in its infancy. By means of a structured literature review, the authors analyze and synthesize the publications particularly from two perspectives. From a research perspective, they find that existing approaches mostly build on users’ connectivity and activity but hardly consider further characteristics of influential users. Moreover, they outline two major research streams. It becomes apparent that most marketing-oriented articles draw on real-world data of OSN, while more technology-oriented papers rather have a theoretical approach and mostly evaluate their artifacts by means of formal proofs. The authors find that a stronger collaboration between the scientific Business and Information Systems Engineering (BISE) and Marketing communities could be mutually beneficial. With respect to a practitioner’s perspective, they compile advice on the practical application of approaches for the identification of influential users. It is hoped that the results can stimulate and guide future research.     

Trade creation and the status of FTAs: empirical evidence from East Asia

East Asia has been considered a latecomer with respect to Free Trade Agreements (FTAs). Since the turn of the last century, however, FTAs with East Asian participation have seen an intra- and extra-regional expansion. Many trade initiatives have been proposed, negotiated or even implemented. This introduces interesting perspectives for the analysis of trade agreements regarding their anticipatory trade effects. This paper focuses on the trade impact of FTAs at different stages that East Asian economies participate in. The central part of this study is an econometric analysis that applies panel data to the gravity model of international trade flows. We augment the traditional model with variables to estimate trade effects of bilateral and multilateral agreements and year-to-year changes in the stages of their implementation. Our results reveal that there exist anticipatory effects preceding the actual implementation of bilateral FTAs with East Asian participation. Further, anticipation effects are larger for bilateral than for multilateral agreements, possibly because the realisation of bilateral agreements is considered more realistic.     

Evolutionary stability of discrimination under observability

We study the evolution of preferences under perfect and almost perfect observability in symmetric 2-player games. We demonstrate that if nature can choose from a sufficiently general preference space, which includes preferences over outcomes that may depend on the opponent's preference-type, then, in most games, only discriminating preferences (treating different types of opponents differently in the same situation) can be evolutionary stable and some discriminating types are stable in a very strong sense in all games. We use these discriminating types to show that any symmetric outcome which gives players more than their minmax value in material payoffs (fitness) can be seen as equilibrium play of a player population with such strongly stable preferences.     

Cross-cultural entrepreneurship research: Current status and framework for future studies

Although cross-cultural research in the field of entrepreneurship is still in its infancy as a research stream, it offers important inferences for both theory and practice. Some have criticized the relative immaturity of previous survey-based studies’ methodology. In order to address this flaw, we analyze existing survey-based studies in the field of cross-cultural entrepreneurship to identify research gaps in content and methodology and then derive the most appropriate analytical approach to fill the gaps for this type of research. Finally, we present a practical framework in which to conduct sound and prudent future studies, integrating the most appropriate analytical approach, general methodological insights, and the particularities of entrepreneurship research in a cross-cultural setting.

That Sounds Sweet: Using Cross‐Modal Correspondences to Communicate Gustatory Attributes

Building on existing research into sound symbolism and cross‐modal correspondences, this article proposes that cross‐modal correspondences—systematic mappings between different sensory modalities—can be used to communicate nonmusical, low‐level sensory properties such as basic tastes through music. A series of three experiments demonstrates that cross‐modal correspondences enable people to systematically encode basic taste properties into parameters in musical space (Experiment 1), and that they are able to correctly decode basic taste information embedded in complex musical compositions (Experiments 2 and 3). The results also suggest some culture‐specificity to these mappings, given that decoding performance, while still above chance levels, was lower in Indian participants than in those from the United States (Experiment 3). Implications and potential applications of these findings are discussed.     

Using surveys of business perceptions as a guide to growth‐enhancing fiscal reforms

This paper assesses the merits of using business perceptions of growth constraints as a guide to growth‐enhancing fiscal policy reforms. Using endogenous growth models in which the government levies an income tax to provide public inputs to the production of private firms, the paper demonstrates that such perceptions of growth constraints may be misleading from a policy perspective. In particular, firms can be expected to systematically overestimate the growth‐enhancing effects of lower tax rates relative to public services and public capital, and underestimate the growth‐enhancing effects of greater provision of public capital relative to taxation and public services. In addition, we show that firms rank different public services and different types of public capital according to the actual costs they impose on firms. It is then shown that these theoretical predictions regarding how firms rank constraints correspond closely to the observed ranking of constraints by firms in the World Bank's Enterprise Surveys.     

Social Learning in Beauty‐Contest Games

We study the impact of social learning on the depth of reasoning in an experimental beauty‐contest game. Naive advice and observation of others' decisions as two forms of social learning trigger faster convergence to the equilibrium. We find that subjects who receive advice outperform uninformed subjects permanently, whereas subjects who observe others' past behavior before making their decision only have a temporary advantage over uninformed subjects. A series of control‐treatments and simulations indicate that the latter result is due to subjects failing to make the most out of observing others.     

The debt brake in the eyes of the German population

In response to the recent sovereign debt crisis, the member states of the European Union agreed to enact balanced budget rules in their national legislation. However, little is known about the public’s opinion of balanced budget rules. To fill this gap, we conducted a survey among 2,000 representatively chosen German citizens. Our findings suggest that 61 % of the German population supports the debt brake, whereas only 8 % oppose it. However, approval rates differ notably among various subgroups of the population. The debt brake enjoys greater support among high-income earners and among those well-informed about the future costs of deficit spending. People who do not trust politicians would like to see the government’s hands tied even more tightly. Opinions about the debt brake also differ markedly across the supporters of different political parties.     

The influence of industry concentration on merger motives—empirical evidence from machinery industry mergers

By linking industrial organization theory and capital market research, we provide empirical evidence that merger motives of firms are influenced by underlying industry concentration. Analyzing wealth effects on target, acquirer and rival firms in the machinery industry, we observe significant different capital market reactions among merger announcements in dependence of underlying industry concentration. suggesting that different takeover motives prevail in fragmented and concentrated industries. In contrast to previous studies, we find besides efficiency motives evidence for monopolistic collusion motives in fragmented industries. Mergers in concentrated industries are primarily motivated to achieve productive efficiency gains. The absence of collusion motives may be an indication for a successful enforcement of antitrust legislation. Our results suggest that the magnitude of the influence of industry concentration in empirical merger motive research may have been previously under-estimated leading to a potential distortion of results.