Efficacy of an Intervention to Reduce the Use of Media Violence and Aggression: An Experimental Evaluation with Adolescents in Germany

Several longitudinal studies and meta-analytic reviews have demonstrated that exposure to violent media is linked to aggression over time. However, evidence on effective interventions to reduce the use of violent media and promote critical viewing skills is limited. The current study examined the efficacy of an intervention designed to reduce the use of media violence and aggression in adolescence, covering a total period of about 12 months. A sample of 683 7th and 8th graders in Germany (50.1% girls) were assigned to two conditions: a 5-week intervention and a no-intervention control group. Measures of exposure to media violence and aggressive behavior were obtained about 3 months prior to the intervention (T1) and about 7 months post-intervention (T2). The intervention group showed a significantly larger decrease in the use of violent media from T1 to T2 than the control group. Participants in the intervention group also scored significantly lower on self-reported aggressive behavior (physical aggression and relational aggression) at T2 than those in the control group, but the effect was limited to those with high levels of initial aggression. This effect was mediated by an intervention-induced decrease in the normative acceptance of aggression. No gender differences in program efficacy were found. The results show that a 5-week school-based intervention can produce changes in the use of media violence, aggressive norms, and behaviors sustained over several months.     

Cyclical accountability

Public Choice - A new wave of protectionism is threatening the open and cooperative international order. This paper applies evolutionary game theory to analyze the stability of international trade...     

Die Körordnung im deutschen und Europäischen Recht

Natur und Recht - Pferdezucht ist nicht nur ein Wirtschaftsfaktor, sie sollte auch die Natur des Pferdes bewahren und seine natürlichen Eigenschaften artgerecht fördern. Insofern...     

The Chinese Dream

At the end of 2014,Chinese President Xi Jinping put forward the strategic layout of the Four Comprehensives—comprehensively building a moderately prosperous society,deepening reform,advancing the rule of law,and strictly governing the Communist Party of China.Later,the new guideline for development became the overall framework for the current leadership's work and has aroused interest at home and abroad.From Issue No.17 onward,Beijing Review publishes a series of commentaries by foreign researchers commissioned by Renmin University of China’s Chongyang Institute for Financial Studies.     

The Democratic Costs of Constitutionalisation: The European Case

There is little doubt that the European Union suffers from a legitimacy deficit. However, the causes of this deficit and, as a consequence, the remedies are contested. This article wants to show that an important, but often overlooked, cause for the legitimacy deficit lies in the overconstitutionalization of the EU. The European Treaties have been constitutionalized by the ECJ, but are full of provisions that would be ordinary law in states. Constitutionalization means de‐politicization. What has been regulated on the constitutional level is no longer open for political decision‐making. Thus, in the EU political decisions of high salience are not only withdrawn from the democratically legitimized institutions, but also immunized against political correction. Therefore, the consequences from the constitutionalization have to be drawn: The Treaties should be reduced to those norms that reflect the functions of a constitution, whereas all the other parts have to be downgraded to the level of secondary law.     

Slovene commercial diplomacy in the Western Balkan countries

The aim of the article is to present activities of Slovene commercial diplomacy in the Western Balkan markets. The result of the analysis proves that Slovene commercial diplomacy in the Western Balkan markets followed enterprise preferences. Thus, in the first decade of transition (1991–2000) commercial diplomacy focused only on ex-Yugoslav markets, while non-ex-YU (Western Balkan) markets became interesting only after the year 2000. The article argues that this can be explained by the reactiveness (instead of proactiveness) of Slovene enterprises, which stems from the Slovene national character.     

Is There a Relationship Between Street Heroin Purity and Drug‐Related Emergencies and/or Drug‐Related Deaths? An Analysis from Vienna,Austria*

This study examines the quality of street heroin seized in Vienna in 1999 and whether there was a relationship between the purity of street heroin and the number of heroin-related emergencies as well as the number of heroin-related deaths. Street heroin confiscated by the Viennese police, run-sheets of drug-related emergencies, and postmortem reports of drug-related deaths in Vienna in 1999 were analyzed. A total of 415 retail samples with a total weight of 128.02 g contained a median percentage of 6.5% diacetylmorphine (range: 0.0-47.0%). All the samples contained a diluent, mainly lactose, as well as adulterants, such as caffeine and/or paracetamol. During the study period, 75 heroin-related deaths and 387 heroin-related emergencies were registered in Vienna. Time-series analysis revealed no statistically significant relationship between the rate of heroin-related incidents and the diacetylmorphine concentration of street heroin samples confiscated in Vienna in 1999. The widely held belief that the number of heroin-related deaths could be explained simply through fluctuations in the purity of street heroin could not be substantiated, even though the results of this study do not rule out an association between the purity of heroin and heroin-related deaths/emergencies.     

Firms’ rationales for interaction with research universities and the principles for public co-funding

R&D managers at 50 firms who have formal relations with two research universities in Stockholm are interviewed about their rationales for collaboration. Drawing on this material, a distinctive typology of rationales for establishing cooperative relations is presented. While the typology demonstrates a considerable breadth of interaction rationales, rationales related to innovation, in terms of invented or improved products or processes, are found to be the main drivers for interaction. Based on this framework, we analyse which rationales for interaction are consistent with public rationales for supporting university-industry relationships. Public co-funding that allow firms to influence (part of) the academic agenda is identified as a particularly interesting case that requires further theoretical attention.     

The structure and dynamics of the global network of inter-firm R&D partnerships 1989–2002

Research and development (R&D) partnerships are formed to share the risks and benefits of R&D. At the macro level, they result in a globe-spanning network that can be a valuable source of international knowledge spillovers. This network is the subject of a considerable body of literature. Often-made claims are that R&D collaboration is an important activity in a competitive environment, but that the importance of international partnerships has declined over time. Furthermore, it is claimed that collaborations are disproportionally concentrated within the developed economies. However, this literature fails to account for variations in the sizes of underlying firm populations between countries and over time. We argue that these population sizes create an opportunity structure of available collaboration partners for firms, and that ignoring variations in this structure potentially leads to erroneous conclusions about the structure and dynamics of the R&D network. To address this problem, we study the structure and dynamics of the global R&D network on an international and cross-industry scale using longitudinal data for 1989?C2002. We integrate data on public firms and their R&D partnerships and confront earlier findings with our data and a set of methods, which enables us to correct for the structure and dynamics in the firm population. While our study confirms previous findings concerning the worldwide trend in collaborative activity, it also shows that results on individual countries need correction. In particular, the importance of R&D collaboration for US companies is overestimated, while their openness towards foreign partners is underestimated.