Contributing for Myself,but Free riding for My Group?

Many real‐world decisions are made by individuals as representatives of groups. Most research, however, studies either individuals or groups as decision‐makers. This paper explores whether there is a general difference between a decision made as an individual and as a representative of a group in the context of a public good game. We conducted a series of experiments to test this question and to understand mechanisms contributing to potential differences. We found that representatives contributed less than individuals when they could not communicate with their constituency. However, when they could discuss their strategy before playing, they contributed at least as much as individual decision‐makers. Furthermore, when they could justify their decision after playing, they contributed even more than individual decision‐makers. We discuss potential reasons for this and directions for future research.     

Socioeconomic differences in public acceptability and car use adaptation towards urban road pricing

Urban road pricing is regarded as an effective instrument to reduce traffic congestion and environmental-related problems in metropolitan areas. Whereas the overall impact of urban road pricing on car use adaptation and public acceptability is known, there are only inconsistent results concerning the socioeconomic differences in the response towards road pricing. However, this knowledge is necessary for the development of urban road pricing packages. This paper uses a segmentation approach to identify groups of car users with a similar background in relevant socioeconomic variables and compares their responses towards road pricing. Three groups are identified: young families, suburban families, and singles and couples. These groups indeed differ in their car use adaptation towards urban road pricing as well as in their preferred revenues use. While all three groups significantly reduced their private car use, the young families reduced their car use most, followed by the group of singles and couples. Complementary measures are discussed that are believed to facilitate car use adaptation of each group in response towards urban road pricing.     

MATCHING SUBSIDIES AND VOLUNTARY CONTRIBUTIONS: A REVIEW

This paper provides a synthesis of the experimental literature on matching subsidies in the context of charitable giving. We classify results according to four different outcome variables frequently considered in the literature and address (i) short‐term effects of linear matching, (ii) the role of the matching rate, (iii) context‐dependence of behavioural responses, (iv) the relevance of the price of giving, (v) long‐term effects and (vi) nonlinear matching schemes. Based on this comprehensive review, we highlight several avenues for future research, such as putting stronger emphasis on competition in fundraising, long‐term effects or heterogeneity in responses.     

An empirical enquiry into co-patent networks and their stars: The case of cardiac pacemaker technology

Scientific research concerning R&D staff structures has already been based on networks as they are mapped by co-patent data. The present paper combines the method of patent analysis with network analysis techniques and shows by means of a patent sample from cardiac pacemaker technology, that the different communication functions a star inventor accomplishes in their network are mirrored not only by quantity, but also by quality of patents. The mere patent quantity has a significant positive impact on the size of an inventors’ personal network and the number of inventors they can directly pass information to. But more importantly, there is significant empirical evidence that high technical specialisation has a positive impact on an inventor’s potential to mediate between others as well as on the efficacy to reach them on short notice. For the latter, likewise the number of citations received is a positive predictor. Thus, we characterise stars as industrious, well-known technical specialists and contradict the general assumption that generalists would be the ideal gatekeeper in an R&D network.     

Konjunkturschlaglicht: Ungarn vor Herausforderungen

Ohne Zusammenfassung     

Fortgesetzter Aufschwung bei weltwirtschaftlichen Risiken

Der konjunkturelle Aufschwung setzt sich weltweit und auch in Deutschland fort. Wie hat sich die Immobilienkrise in den USA ausgewirkt? Welche Zins- und welche Rohstoffpreisentwicklung wird erwartet? Mit welchen Wachstumsraten wird in Deutschland gerechnet und welche Effekte hatte die Mehrwertsteuererh?hung? Wie wird sich die Situation auf dem Arbeitsmarkt entwickeln?