Social Distress and Economic Integration
Walter Hyll, Lutz Schneider
IWH Discussion Papers,
No. 21,
2016
Abstract
We analyze whether social distress from income comparisons affects attitudes towards the integration of economies. Using Germany’s division as natural experiment, we find that East Germans’ feelings of relative deprivation with respect to better-off West Germans led to significantly more support for the upcoming German re-unification.
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In Search of Concepts: The Effects of Speculative Demand on Stock Returns
Owain ap Gwilym, Iftekhar Hasan, Qingwei Wang, Ru Xie
European Financial Management,
No. 3,
2016
Abstract
Using a novel proxy of investors' speculative demand constructed from online search interest in investment concepts, we examine how speculative demand affects the returns of Chinese stocks. We find that speculative demand increases following high market returns and predicts subsequent return reversals. Moreover, the speculative demand explains more variation in subsequent returns of A shares (more populated by retail investors) than B shares (less populated by retail investors). Our findings support the recently developed attention theory.
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14.04.2016 • 15/2016
Joint Economic Forecast Spring 2016: Upturn Remains Moderate – Economic Policy Lacks Growth Orientation
Economic research institutes now estimate that gross domestic product will increase by 1.6 percent in 2016, instead of 1.8 percent as forecast in autumn 2015.
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03.12.2015 • 44/2015
Migration Affects Labour Market in Eastern Germany
Migration increasingly affects the labour market in Eastern Germany, having effects on employment and unemployment figures as well as the number of recipients of social assistance benefits under the SGB II regulations. Particularly with countries in Middle and Eastern Europe, countries affected by the European debt and confidence crisis and with people seeking asylum, there are large increases meeting the dimensions in Western Germany. However, migrants overall still form a significantly smaller percentage of the population and other labour market parameters in Eastern Germany, since migration was a lot stronger in Western Germany during the last decades. While on the short run negative effects on unemployment have to be expected, there are also chances, in the medium- and long-term, to soften the expectable demographic problems, if integration and qualification are supported.
Oliver Holtemöller
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Sign Restrictions, Structural Vector Autoregressions, and Useful Prior Information
Christiane Baumeister, James D. Hamilton
Econometrica,
No. 5,
2015
Abstract
This paper makes the following original contributions to the literature. (i) We develop a simpler analytical characterization and numerical algorithm for Bayesian inference in structural vector autoregressions (VARs) that can be used for models that are overidentified, just‐identified, or underidentified. (ii) We analyze the asymptotic properties of Bayesian inference and show that in the underidentified case, the asymptotic posterior distribution of contemporaneous coefficients in an n‐variable VAR is confined to the set of values that orthogonalize the population variance–covariance matrix of ordinary least squares residuals, with the height of the posterior proportional to the height of the prior at any point within that set. For example, in a bivariate VAR for supply and demand identified solely by sign restrictions, if the population correlation between the VAR residuals is positive, then even if one has available an infinite sample of data, any inference about the demand elasticity is coming exclusively from the prior distribution. (iii) We provide analytical characterizations of the informative prior distributions for impulse‐response functions that are implicit in the traditional sign‐restriction approach to VARs, and we note, as a special case of result (ii), that the influence of these priors does not vanish asymptotically. (iv) We illustrate how Bayesian inference with informative priors can be both a strict generalization and an unambiguous improvement over frequentist inference in just‐identified models. (v) We propose that researchers need to explicitly acknowledge and defend the role of prior beliefs in influencing structural conclusions and we illustrate how this could be done using a simple model of the U.S. labor market.
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Joint Forecast: Migration of Refugees will Challenge Economic Policy
Roland Döhrn, Ferdinand Fichtner, Oliver Holtemöller, Timo Wollmershäuser
Wirtschaftsdienst,
No. 10,
2015
Abstract
According to the Autumn 2015 Joint Forecast German GDP will grow by 1.8% in this year and in the next year also. Thus the business cycle upswing will continue to be moderate. Lower growth in the emerging markets will show a dampening effect on exports whereas private consumption will gain momentum, given a strong labor market and an increase in real wages. However, new workers are increasingly recruited from the non-active population and among immigrants, leaving unemployment more or less unchanged. In the next year, the huge current inflow of refugees will increasingly influence the number of unemployed. For economic policy the challenge is to integrate refugees into the labour market as soon as possible.
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On the Trail of Core–periphery Patterns in Innovation Networks: Measurements and New Empirical Findings from the German Laser Industry
Wilfried Ehrenfeld, Toralf Pusch, Muhamed Kudic
Annals of Regional Science,
No. 1,
2015
Abstract
It has been frequently argued that a firm’s location in the core of an industry’s innovation network improves its ability to access information and absorb technological knowledge. The literature has still widely neglected the role of peripheral network positions for innovation processes. In addition to this, little is known about the determinants affecting a peripheral actors’ ability to reach the core. To shed some light on these issues, we have employed a unique longitudinal dataset encompassing the entire population of German laser source manufacturers (LSMs) and laser-related public research organizations (PROs) over a period of more than two decades. The aim of our paper is threefold. First, we analyze the emergence of core–periphery (CP) patterns in the German laser industry. Then, we explore the paths on which LSMs and PROs move from isolated positions toward the core. Finally, we employ non-parametric event history techniques to analyze the extent to which organizational and geographical determinates affect the propensity and timing of network core entries. Our results indicate the emergence and solidification of CP patterns at the overall network level. We also found that the paths on which organizations traverse through the network are characterized by high levels of heterogeneity and volatility. The transition from peripheral to core positions is impacted by organizational characteristics, while an organization’s geographical location does not play a significant role.
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Taking the First Step - What Determines German Laser Source Manufacturers' Entry into Innovation Networks?
Jutta Günther, Muhamed Kudic, Andreas Pyka
International Journal of Innovation Management,
No. 5,
2015
Abstract
Early access to technological knowledge embodied in the industry’s innovation network can provide an important competitive advantage to firms. While the literature provides much evidence on the positive effects of innovation networks on firms’ performance, not much is known about the determinants of firms’ initial entry into such networks. We analyze firms’ timing and propensity to enter the industry’s innovation network. More precisely, we seek to shed some light on the factors affecting the duration between firm founding and its first cooperation event. In doing so, we apply a unique longitudinal event history dataset based on the full population of German laser source manufacturers. Innovation network data stem from official databases providing detailed information on the organizations involved, subject of joint research and development (R&D) efforts as well as start and end times for all publically funded R&D projects between 1990 and 2010. Estimation results from a non-parametric event history model indicate that micro firms enter the network later than small-sized or large firms. An in-depth analysis of the size effects for medium-sized firms provides some unexpected findings. The choice of cooperation type makes no significant difference for the firms’ timing to enter the network. Finally, the analysis of geographical determinants shows that cluster membership can, but do not necessarily, affect a firm’s timing to cooperate.
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06.07.2015 • 27/2015
Rejection of Reforms as a Chance for Reforms
The President of the Halle Institute for Economic Research (IWH) – Member of the Leibniz Association continues to see a chance for an agreement between the European Union (EU) and Greece. On the surface, Grexit looks now more likely than ever. But the resignation of Yanis Varoufakis, Minister of Finance, and the outcome of the referendum may also provide a chance for the Greek government to agree on reforms and save face. But the window of opportunity is closing very fast.
Reint E. Gropp
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