Crowdsourced Innovation: How Community Managers Affect Crowd Activities
Sabrina Jeworrek, Lars Hornuf
Abstract
In this study, we investigate whether and to what extent community managers in online collaborative communities can stimulate crowd activities through their engagement. Using a novel data set of 22 large online idea crowdsourcing campaigns, we find that active engagement of community managers positively affects crowd activities in an inverted U-shaped manner. Moreover, we evidence that intellectual stimulation by managers increases community participation, while individual consideration of users has no impact on user activities. Finally, the data reveal that community manager activities that require more effort, such as media file uploads instead of simple written comments, have a larger effect on crowd participation.
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Africa’s Skill Tragedy
Jan Bietenbeck, Marc Piopiunik, Simon Wiederhold
Journal of Human Resources,
Nr. 3,
2018
Abstract
We study the importance of teacher subject knowledge for student performance in Sub-Saharan Africa using unique international assessment data for sixth-grade students and their teachers. To circumvent bias due to unobserved student heterogeneity, we exploit variation within students across math and reading. Teacher subject knowledge has a modest impact on student performance. Exploiting vast cross-country differences in economic development, we find that teacher knowledge is effective only in more developed African countries. Results are robust to adding teacher fixed effects and accounting for potential sorting based on subject-specific factors.
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Channeling the Iron Ore Super-cycle: The Role of Regional Bank Branch Networks in Emerging Markets
Helge Littke
IWH Discussion Papers,
Nr. 11,
2018
Abstract
The role of the financial system to absorb and to intermediate commodity boom induced windfall gains efficiently presents one of the most pressing issues for developing economies. Using an exogenous increase in iron ore prices in March 2005, I analyse the role of regional bank branch networks in Brazil in reallocating capital from affected to non-affected regions. For the period from March 2004 to March 2006, I find that branches directly exposed to this shock by their geographical location experience an increase in deposit growth in the post-shock period relative to non-affected branches. Given that these deposits are not reinvested locally, I further show that branches located in the non-affected region increase lending growth depending on their indirect exposure to the booming regions via their branch network. Even tough, these results provide evidence against a Dutch Disease type crowding out of the non-iron ore sector, further evidence suggests that this capital reallocation is far from being optimal.
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What Type of Finance Matters for Growth? Bayesian Model Averaging Evidence
Iftekhar Hasan, Roman Horvath, Jan Mares
World Bank Economic Review,
Nr. 2,
2018
Abstract
We examine the effect of finance on long-term economic growth using Bayesian model averaging to address model uncertainty in cross-country growth regressions. The literature largely focuses on financial indicators that assess the financial depth of banks and stock markets. We examine these indicators jointly with newly developed indicators that assess the stability and efficiency of financial markets. Once we subject the finance-growth regressions to model uncertainty, our results suggest that commonly used indicators of financial development are not robustly related to long-term growth. However, the findings from our global sample indicate that one newly developed indicator—the efficiency of financial intermediaries—is robustly related to long-term growth.
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On the Returns to Invention within Firms: Evidence from Finland
Philippe Aghion, Ufuk Akcigit, Ari Hyytinen, Otto Toivanen
American Economic Association Papers and Proceedings,
2018
Abstract
In this paper we merge individual income data, firm-level data, patenting data, and IQ data in Finland over the period 1988–2012 to analyze the returns to invention for inventors and their coworkers or stakeholders within the same firm. We find that: (i) inventors collect only 8 percent of the total private return from invention; (ii) entrepreneurs get over 44 percent of the total gains; (iii) bluecollar workers get about 26 percent of the gains and the rest goes to white-collar workers. Moreover, entrepreneurs start with significant negative returns prior to the patent application, but their returns subsequently become highly positive.
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Die wirtschaftliche Entwicklung Sachsen-Anhalts seit 1990
Oliver Holtemöller, Axel Lindner
Abstract
In diesem Beitrag wird die wirtschaftliche Entwicklung Sachsen-Anhalts seit 1990 im Kontext des ostdeutschen Transformationsprozesses von einer Zentralverwaltungswirtschaft zu einer Marktwirtschaft beschrieben. Die wirtschaftliche Leistungsfähigkeit Sachsen-Anhalts hat in den frühen 1990er Jahren zunächst schnell gegenüber Westdeutschland aufgeholt, vor allem weil der Kapitalstock modernisiert und erweitert worden ist. Seit einiger Zeit stagniert der Aufholprozess jedoch, und das Bruttoinlandsprodukt je Erwerbstätigen liegt etwa 20% unter dem westdeutschen Niveau. Die wirtschaftspolitische Herausforderung besteht darin, den Aufholprozess durch die Förderung von Forschung und Innovation und durch bessere Qualifizierung der Erwerbstätigen weiter voranzubringen.
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On Mitra's Sufficient Condition for Topological Chaos: Seventeen Years Later
Liuchun Deng, M. Ali Khan
Economics Letters,
March
2018
Abstract
This letter reports an easy extension of Mitra’s “easily verifiable” sufficient condition for topological chaos in unimodal maps, and offers its application to reduced-form representations of two economic models that have figured prominently in the recent literature in economic dynamics: the check- and the M-map pertaining to the 2-sector Robinson–Solow–Srinivasan (RSS) and Matsuyama models respectively. A consideration of the iterates of these maps establishes the complementarity of the useful 2001 condition with the 1982 (LMPY) theorem of Li–Misiurewicz–Pianigiani–Yorke when supplemented by a geometric construction elaborated in Khan–Piazza (2011).
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When Arm’s Length is too Far: Relationship Banking over the Credit Cycle
Thorsten Beck, Hans Degryse, Ralph De Haas, Neeltje van Horen
Journal of Financial Economics,
Nr. 1,
2018
Abstract
We conduct face-to-face interviews with bank CEOs to classify 397 banks across 21 countries as either relationship or transaction lenders. We then use the geographic coordinates of these banks’ branches and of 14,100 businesses to analyze how the lending techniques of banks in the vicinity of firms are related to credit constraints at two contrasting points of the credit cycle. We find that while relationship lending is not associated with credit constraints during a credit boom, it alleviates such constraints during a downturn. This positive role of relationship lending is stronger for small and opaque firms and in regions with a more severe economic downturn. Moreover, our evidence suggests that relationship lending mitigates the impact of a downturn on firm growth and does not constitute evergreening of loans.
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Polen vor der Middle-Income-Trap? Entwicklungsplan bis 2030 soll
den Aufholprozess beschleunigen
Oliver Holtemöller, Martina Kämpfe
Wirtschaft im Wandel,
Nr. 4,
2017
Abstract
Polen hat seinen Abstand gegenüber den entwickelten Marktwirtschaften Westeuropas seit dem Beginn der 1990er Jahre bis heute gemessen am Pro-Kopf-Einkommen stark verringert. Galt das Land in den ersten zwei Jahrzehnten unter den mittelosteuropäischen Ländern als Vorreiter beim Wirtschaftswachstum, so hat sich das Aufholtempo in den letzten Jahren verlangsamt. Die polnische Regierung reagierte darauf mit einem strategischen Entwicklungsplan („Morawiecki“-Plan), der Maßnahmen und Ziele bis 2030 benennt und Polens Aufholprozess neuen Schwung verleihen soll. Für das wirtschaftsliberale Reformland bedeutet mehr staatlich gesteuerte Wirtschaftsplanung allerdings einen Paradigmenwechsel. Vom Erfolg dieser Strategie hängt es ab, ob Polen den Übergang in die zweite, innovationsorientierte Phase des Aufholprozesses schafft oder längerfristig auf dem bisherigen Niveau zu verharren droht.
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28.09.2017 • 36/2017
Aufschwung im Osten so stark wie in Deutschland insgesamt – Implikationen der Gemeinschaftsdiagnose Herbst 2017 für Ostdeutschland
Für das Jahr 2017 prognostiziert das Leibniz-Institut für Wirtschaftsforschung Halle (IWH) einen Anstieg des ostdeutschen Bruttoinlandsprodukts mit Berlin um 1,9% (Gemeinschaftsdiagnose für Deutschland insgesamt ebenfalls 1,9%). Der gegenüber dem Jahr 2016 (2,1%) etwas schwächere Zuwachs der Produktion resultiert lediglich aus der geringeren Anzahl von Arbeitstagen. Auch im Jahr 2018 dürfte die ostdeutsche Wirtschaft mit 2,0% so kräftig wie in Deutschland insgesamt zulegen.
Oliver Holtemöller
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