Criminal Network Formation and Optimal Detection Policy: The Role of Cascade of Detection
Liuchun Deng, Yufeng Sun
Journal of Economic Behavior and Organization,
September
2017
Abstract
This paper investigates the effect of cascade of detection, how detection of a criminal triggers detection of his network neighbors, on criminal network formation. We develop a model in which criminals choose both links and actions. We show that the degree of cascade of detection plays an important role in shaping equilibrium criminal networks. Surprisingly, greater cascade of detection could reduce ex ante social welfare. In particular, we prove that full cascade of detection yields a weakly denser criminal network than that under partial cascade of detection. We further characterize the optimal allocation of the detection resource and demonstrate that it should be highly asymmetric among ex ante identical agents.
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Upturn Remains Moderate — Economic Policy Lacks Growth Orientation
Roland Döhrn, Ferdinand Fichtner, Oliver Holtemöller, Timo Wollmershäuser
Wirtschaftsdienst,
No. 5,
2016
Abstract
Die deutsche Wirtschaft befindet sich in einem moderaten Aufschwung. Zu diesem Ergebnis kommt die Mitte April veröffentlichte Gemeinschaftsdiagnose der Wirtschaftsforschungsinstitute. Das Bruttoinlandsprodukt dürfte demnach in diesem Jahr um 1,6% und im kommenden Jahr um 1,5% zulegen. Getragen wird der Aufschwung vom privaten Konsum, der vom anhaltenden Beschäftigungsaufbau, den spürbaren Steigerungen der Lohn- und Transfereinkommen und den Kaufkraftgewinnen infolge der gesunkenen Energiepreise profitiert.
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Exit Expectations and Debt Crises in Currency Unions
Alexander Kriwoluzky, G. J. Müller, M. Wolf
IWH Discussion Papers,
No. 18,
2015
Abstract
Membership in a currency union is not irreversible. Exit expectations may emerge during sovereign debt crises, because exit allows countries to reduce their liabilities through a currency redenomination. As market participants anticipate this possibility, sovereign debt crises intensify. We establish this formally within a small open economy model of changing policy regimes. The model permits explosive dynamics of debt and sovereign yields inside currency unions and allows us to distinguish between exit expectations and those of an outright default. By estimating the model on Greek data, we quantify the contribution of exit expectations to the crisis dynamics during 2009 to 2012.
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Are there Business Cycles “beyond GDP“? Alternative Measures to GDP at Business Cycle Frequencies
Jörg Döpke, Philip Maschke
Applied Economics Quarterly,
No. 2,
2015
Abstract
We discuss properties of alternatives or complements to GDP as a measure of welfare at business cycle frequencies. Our results imply that the suggested indicators show practically no cycle at all and their methodologies can be questioned. First, data are not available at an appropriate quality and frequency. Second, the suggested time series sometimes correlate negatively with each other. Third, cross-section and quasi-panel evidence based on different samples of countries reveals no impact of the stance of the business cycle on some suggested welfare measures. Therefore, alternative welfare measures do not show an equal picture on business cycle frequencies compared to GDP-based measures.
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Is Subsidizing Companies in Difficulties an Optimal Policy? An Empirical Study on the Effectiveness of State Aid in the European Union
Nicole Nulsch
IWH Discussion Papers,
No. 9,
2014
Abstract
Even though state aid in order to rescue or restructure ailing companies is regularly granted by European governments, it is often controversially discussed. The aims for rescuing companies are manifold and vary from social, industrial and even political considerations. Well-known examples are Austrian Airlines (Austria) or MG Rover (Great Britain). Yet, this study aims to answer the question whether state aid is used effectively and whether the initial aim why aid has been paid has been reached, i.e. the survival of the company. By using data on rescued companies in the EU and applying a survival analysis, this paper investigates the survival rates of these companies up to 15 years after the aid has been paid. In addition, the results are compared to the survival rates of non-rescued companies which have also been in difficulties. The results suggest that despite the financial support, business failure is often only post-poned; best survival rates have firms with long-term restructuring, enterprises in Eastern Europe, smaller firms and mature companies. However, non-funded companies have an even higher ratio to go bankrupt.
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Impact of Personal Economic Environment and Personality Factors on Individual Financial Decision Making
S. Prinz, G. Gründer, R. D. Hilgers, Oliver Holtemöller, I. Vernaleken
Frontiers in Decision Neuroscience,
No. 158,
2014
Abstract
This study on healthy young male students aimed to enlighten the associations between an individual’s financial decision making and surrogate makers for environmental factors covering long-term financial socialization, the current financial security/responsibility, and the personal affinity to financial affairs as represented by parental income, funding situation, and field of study. A group of 150 male young healthy students underwent two versions of the Holt and Laury (2002) lottery paradigm (matrix and random sequential version). Their financial decision was mainly driven by the factor “source of funding”: students with strict performance control (grants, scholarships) had much higher rates of relative risk aversion (RRA) than subjects with support from family (ΔRRA = 0.22; p = 0.018). Personality scores only modestly affected the outcome. In an ANOVA, however, also the intelligence quotient significantly and relevantly contributed to the explanation of variance; the effects of parental income and the personality factors “agreeableness” and “openness” showed moderate to modest – but significant – effects. These findings suggest that environmental factors more than personality factors affect risk aversion.
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Parent Universities and the Location of Academic Startups
S. Heblich, Viktor Slavtchev
Small Business Economics,
No. 1,
2014
Abstract
Academic startups are thought to locate in their parent university’s home region because geographic proximity to a university facilitates access to academic knowledge and resources. In this paper we analyze the importance of a different channel, namely social ties between academic entrepreneurs and university researchers, for the access to academic knowledge and resources, and therefore for the location of the startups. We employ unique data on academic startups from regions with more than one university and find that only the parent university influences academic entrepreneurs’ decisions to stay in the region while other universities in the same region play no role. Our findings suggest that geographic proximity to a university may not per se guarantee access to knowledge and resources; social contacts are additionally required. The importance of social ties implies that academic knowledge and resources are not necessarily local public goods. This holds implications for universities’ role in stimulating regional development.
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Default Options and Social Welfare: Opt In versus Opt Out
Jan Bouckaert, Hans Degryse
Journal of Institutional and Theoretical Economics JITE,
No. 3,
2013
Abstract
We offer a social-welfare comparison of the two most prominent default options – opt in and opt out – using a two-period model of localized competition. We demonstrate that when consumers stick to the default option, the prevailing default policy shapes firms' ability to collect and use customer information, and affects their pricing strategy and entry decision differently. The free-entry analysis reveals that fewer firms enter under opt out as competition becomes harsher, and that opt out is the socially preferred default option.
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Towards a Europeanization of Wage Bargaining? Evidence from the Metal Sector
Vera Glassner, Toralf Pusch
European Journal of Industrial Relations,
No. 2,
2013
Abstract
European trade unions have attempted to coordinate their bargaining strategies transnationally in order to counter downward pressures on wages. Such coordination is most feasible in broadly integrated and exposed sectors that have to face common competitive constraints on wages. This article investigates collectively negotiated wage increases in the metal sector in Belgium, the Netherlands and Germany. We assume a specific logic of transnational pattern bargaining, with Germany as the ‘anchor’ country. We investigate the emergence of a transnational wage coordination effect before and after institutions for the coordination of wage bargaining were established. Finally, we draw conclusions on prospects for wage bargaining coordination with further integration of Economic and Monetary Union.
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Does It Pay to Have Friends? Social Ties and Executive Appointments in Banking
Allen N. Berger, Thomas Kick, Michael Koetter, Klaus Schaeck
Journal of Banking and Finance,
No. 6,
2013
Abstract
We exploit a unique sample to analyze how homophily (affinity for similar others) and social ties affect career outcomes in banking. We test if these factors increase the probability that the appointee to an executive board is an outsider without previous employment at the bank compared to being an insider. Homophily based on age and gender increase the chances of the outsider appointments. Similar educational backgrounds, in contrast, reduce the chance that the appointee is an outsider. Greater social ties also increase the probability of an outside appointment. Results from a duration model show that larger age differences shorten tenure significantly, whereas gender similarities barely affect tenure. Differences in educational backgrounds affect tenure differently across the banking sectors. Maintaining more contacts to the executive board reduces tenure. We also find weak evidence that social ties are associated with reduced profitability, consistent with cronyism in banking.
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