Martin Leroch

Martin Leroch

About

25
Publications
2,559
Reads
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81
Citations
Citations since 2016
5 Research Items
58 Citations
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2016201720182019202020212022024681012
2016201720182019202020212022024681012
2016201720182019202020212022024681012

Publications

Publications (25)
Article
Full-text available
The political news media play an important role in the successful working of democratic societies. In order to fulfill this role, a sufficient level of journalistic quality is required. Most Western societies rely on the market as means to assure this level of quality. This implies regulation of the media sector by competition law, which may take d...
Chapter
Expressive crime is a form of illegal behavior which is motivated by the desire to communicate personal attitudes to oneself or others. It contrasts with instrumental crime, which is motivated by the desire to gain material objects.
Article
Full-text available
Several everyday examples imply that humans reciprocate not only towards direct perpetrators, but also to entire groups, thereby potentially affecting innocent bystanders. We test the hypothesis that people are predisposed to reciprocate against groups. In a laboratory experiment, subjects who were helped or harmed by another player’s action reacte...
Article
Full-text available
We propose a comprehensive model of the political economy of land grabbing. It is based on arguments related to property rights assignments, societal power relations along the core-periphery dimension as well as distributional, ethnic and resource-exhausting conflict. In times of global “land rush”, the (corrupt) elite in the core increasingly cons...
Article
This paper examines the relationship between religion and home bias. A theoretical framework is proposed suggesting that countries may show a certain degree of religion-enhanced international altruism associated with a lower home bias. These predictions are investigated empirically using original individual-level data from a survey on religious att...
Article
Purpose ‐ The purpose of this paper is to give structure to the argument that "culture matters." Further, the aim is to show how cultural differences shape the use of incentives within firms and point toward culturally affected degrees of efficiency. Design/methodology/approach ‐ The paper incorporates differences in the evaluation of the stimuli m...
Chapter
News media play an irreplaceably important role in the successful working of democratic societies: they guarantee that citizens have access to information, are accurately informed, and actively take part in the political process. A crucial factor for the effective fulfillment of these democratic functions is an adequate level of journalistic qualit...
Article
Expressive crime contrasts with instrumental crime in that delinquents do not seek material benefits. Law breakers are motivated by the desire to ‘make a statement’, possibly against majority attitudes in the society. Fighting expressive crime is complicated by this fact in that increasing intervention may have counter effects. In this article, I p...
Preprint
Full-text available
Third party punishment is crucial for sustaining cooperative behavior. Still, little is known about its determinants. In this paper we use laboratory experiments to in- vestigate a long-conjectured interaction between group identification and bystanders’ punishment preferences using a novel measure of these preferences. We induce minimal groups and...
Article
Field studies of conflict report cycles of mutual revenge between groups, often linked to perceptions of intergroup injustice. We test the hypothesis that people are predisposed to reciprocate against groups. In a laboratory experiment, subjects who were harmed by a partner’s uncooperative action reacted by harming other members of the partner’s gr...
Article
Full-text available
In this paper we apply Rawls’s theory of justice, Binmore’s evolutionary approach to theforming of norms and Harsanyi’s version of utilitarianism to the interpretation of a selection ofexperimental results deriving from, e.g., ultimatum game experiments. It is often argued thatbehaviour in the ultimatum game reflects norms of fairness. Our discussi...
Article
This paper examines the relationship between religion and home bias.We propose a simple theoretical framework that suggests that countries interacting via their representative individuals might show a certain degree of religion-driven international altruism that in turn affects trade. We test these predictions exploiting data from a survey on relig...
Article
Many European governments subsidize their newspapers with the intention to guaranteeing high journalistic quality. Since journalistic quality is not defined by consumer preferences, increasing will not necessarily lead to benefits for all consumers. Based on this idea, the demand for a regional newspaper monopolist is modeled and the profit maximiz...
Article
Full-text available
Legal processes have a theatrical component to them. They offer an audience (the spectators) and actors (the legal parties, lawyers, as well as the jury and judge) who perform a play on the stage of the courtroom. In this paper we focus on the role of the jury, which appears to be simultaneously audience and actor. As audience, it assures that the...
Article
People exhibit reciprocity towards groups when they retaliate, not against the person who harmed them, but against another person in that person's group. Group reciprocity may be a key motivation behind intergroup conflict. We investigated group reciprocity in laboratory experiments. After a group identity manipulation, subjects played a Prisoner's...
Article
At first sight, modern economics and justice seem not to fit together. Whereas the former primarily deals with individual self-interest and extrinsic incentives, the latter deals with other-regardingness and intrinsic social motives. However, recent findings, mainly from the field of experimental economics, reintroduce aspects of justice into econo...
Article
Social incentives, e. g. holding others responsible, are a major but in economics rarely discussed element of norm enforcement. I argue they are intimately tied to sentiments towards the assumed causers of a specific outcome. If, in case of joint actions, individual causers are not identifiable, a group as a whole may be held responsible. Those col...
Article
Full-text available
Building on Adam Smith's moral theory, the paper discusses effects of group size on moral standards. The key concepts of Smith's theory, sympathy and the impartial spectator, provide a basis here fore, as they presuppose a moral community, i.e. a group of people bound together via common experience and values. As this group increases in size, commo...
Article
In this paper we present an economic model contributing to the explanation of religious schism, a topic mostly dealt with in the fields of sociology and psychology so far. The main idea is to see religious groups as networks. These networks may serve as a device for exchanging information about and via other members. Two effects are implied by this...
Article
An economic signalling model contributing to the explanation of religious schism is presented. Religious groups are interpreted as a device for exchanging information about and via others. Two effects result. First, the larger the network, the worse the signal quality one receives of the type of other members. Second, the larger a network, the more...
Article
Even among economists it is meanwhile commonly held that culture has significant influence on social organization. Because cultures affect the way people evaluate different objects or behaviors, I argue, culture also influences the effectiveness of incentives such as money and hierarchy. Thus, in contrast to related models, the effectivity differen...
Article
Full-text available
People exhibit group reciprocity when they retaliate, not against the person who harmed them, but against somebody else in that person's group. Group reciprocity may be a key motivation behind intergroup conflict. We investigated group reciprocity in a laboratory experiment. After a group identity manipulation, subjects played a Prisoner'...

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Projects

Project (1)
Project
In this project, we investigate - effects of a variety of constructs (such as competition and media sponsorships) on journalistic quality, media performance and media bias and - measurement approaches for journalistic quality, media performance and media bias.