Fakultät Wirtschafts- und Sozialwissenschaften

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Die Fakultät vereint Forschung und moderne Lehre nach internationalen Standards. Das Hohenheimer Modell verzahnt dabei betriebs- und volkswirtschaftliche, sozial- und rechtswissenschaftliche Aspekte.

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A direct test of socially desirable responding in contingent valuation interviews
(2011) Börger, Tobias
Ageing and productivity
(2013) Bloom, David E.; Sousa-Poza, Alfonso
Assessing uncertainty in Europe and the US : is there a common factor?
(2012) Sauter, Oliver
This paper aims an empirical investigation of uncertainty in the Euro Zone as well as the US. For this purpose I conduct a factor analysis of uncertainty measures starting in 2001 until the end of 2011. I use survey-based data provided by the ECB and the Federal Reserve Bank of Philadelphia as well as the stock market indices VSTOXX and VIX, both measures of implied volatility of stock market movements. Each measure shows an increase in uncertainty during the last years marked by the financial turmoil. Given the rise in uncertainty, the question arises whether this uncertainty is driven by the same underlying factors. For the Euro Zone, I show that uncertainty can be separated into factors of short and long-term uncertainty. In the US there is a sharp distinction between uncertainty that drives stock market and ?real? variables on the one hand and inflation (short and long-term) on the other hand. Combining both data sets, factor analysis delivers (1) an international stock market factor, (2) a common European uncertainty factor and (3) an US-inflation uncertainty factor.
Avoiding evolutionary inefficiencies in innovation networks
(2011) Pyka, Andreas
Innovation policy is in need for a rational which allows the design and evaluation of policy instruments. In economic policy traditionally the focus is on market failures and efficiency measures are used to decide whether policy should intervene and which instrument should be applied. In innovation policy this rational cannot meaningfully be applied because of the uncertain and open character of innovation processes. Uncertainty is not a market failure and cannot be repaired. Inevitably policy makers are subject to failure and their goals are to be considered as much more modest compared to the achievement of a social optimum. Instead of optimal innovation, the avoidance of evolutionary inefficiencies becomes the centrepiece of innovation policy making. Superimposed to the several sources of evolutionary inefficiencies are socalled network inefficiencies. Because of the widespread organisation of innovation in innovation networks, the network structures and dynamics give useful hints for innovation policy, where and when to intervene.
Capital income shares and income inequality in the European Union
(2013) Schmid, Kai Daniel; Schlenker, Eva
In this paper, we measure the effect of changing capital income shares upon inequality of gross household income. Using EU-SILC data covering 17 EU countries from 2005 to 2011 we find that capital income shares are positively associated with the concentration of gross household income. Moreover, we show that the transmission of a shift in capital income shares into the personal distribution of income depends on the concentration of capital income in an economy. Using fixed effect models we find that changing capital income shares play an important role in the development of household income inequality. Hence, in many industrialized countries income inequality has by no means evolved independently from the observed structural shift in factor income towards a higher capital income share over the last decades.
Catching-up and falling behind knowledge spillover from American to German machine tool makers
(2009) Richter, Ralf; Streb, Jochen
In our days, German machine tool makers accuse their Chinese competitors of violating patent rights and illegally imitating German technology. A century ago, however, German machine tool makers used exactly the same methods to imitate American technology. To understand the dynamics of this catching-up process we use patent statistics to analyze firms? activities between 1877 and 1932. We show that German machine tool makers successfully deployed imitating and counterfeiting activities in the late 19th century and the 1920s to catchup to their American competitors. The German administration supported this strategy by stipulating a patent law that discriminated against foreign patent holders and probably also by delaying the granting of patents to foreign applicants. Parallel to the growing international competitiveness of German firms, however, the willingness to guarantee intellectual property rights of foreigners was also increasing because German firms had now to fear retaliatory measures in their own export markets when violating foreign property rights within Germany.
Contract design and insurance fraud : an experimental investigation
(2010) Schiller, Jörg; Lammers, Frauke
This paper investigates the impact of insurance contract design on the behavior of filing fraudulent claims in an experimental setup. We test how fraud behavior varies for insurance contracts with full coverage, a straight deductible or variable premiums (bonus-malus contract). In our experiment, filing fraudulent claims is a dominant strategy for selfish participants, with no psychological costs of committing fraud. While some people always commit fraud, a substantial share of people only occasionally or never defraud. In addition, we find that deductible contracts may be perceived as unfair and thus increase the extent of claim build-up compared to full coverage contracts. In contrast, bonus-malus contracts with variable insurance premiums significantly reduce the filing of fictitious claims compared to both full coverage and deductible contracts. This reduction cannot be explained by monetary incentives. Our results indicate that contract design significantly affects psychological costs and, consequently, the extent of fraudulent behavior of policyholders.
Cyclicality of real wages in the USA and Germany : new insights from wavelet Analysis
(2012) Gómez, Víctor ; Marczak, Martyna
This article provides new insights into the cyclical behavior of consumer and producer real wages in the USA and Germany. We apply two methods for the estimation of the cyclical components from the data: the approach based on the structural time series models and the ARIMA?model?based approach combined with the canonical decomposition and a band?pass filter. We examine the extracted cycles drawing on two wavelet concepts: wavelet coherence and wavelet phase angle. In contrast to the analysis in the time or frequency domains, wavelet analysis allows for the identification of possible changes in cyclical patterns over time. From the findings of our study, we can infer that the USA and Germany differ with respect to the lead?lag relationship of real wages and the business cycle. In the USA, both real wages are leading the business cycle in the entire time interval. The German consumer real wage is, on the other hand, lagging the business cycle. For the German producer real wage, the lead?lag pattern changes over time. We also find that real wages in the USA as well in Germany are procyclical or acyclical until 1980 and countercyclical thereafter.
Distal embedding as a technology innovation network formation strategy
(2012) Pyka, Andreas; Paredes-Frigolett, Harold
Although the area of innovation economics dates back to the early twentieth century with the seminal contributions of Schumpeter (1911), it is only recently that governments have understood the role of a comprehensive approach towards public sector economics that puts innovation systems in the eye of public policy decision makers. Although well researched in academia in recent years, the role that innovation networks play in driving successful processes of innovation and entrepreneurship has been less understood by policy makers. Indeed, so far public policy makers have been concerned with the macro level of public policy in a way that has been rather ?disconnected? from the meso level of innovation networks. Not surprisingly, overall strategies for innovation network formation have not been on the radar screen of public policy. The academic community, on the other hand, has been devoting more attention to the study of innovation networks in an attempt to understand the role they play as a catalyst of innovation and entrepreneurship. By and large in the research community, the process of innovation network formation has been left rather unattended. Indeed, the question of how these networks are formed and what strategies can be developed to ignite processes of innovation network formation has been largely absent from the academic debate. In this article, we make a contribution in this area and present ?distal embedding" as one of three generic innovation network formation strategies. We also show why ?distal embedding'' is particularly well suited for emerging regions of innovation and entrepreneurship. Our contributions lie at the macro-meso interface and can shed light on public policy at the macro level aiming to have a direct impact at the meso level of innovation network formation.
Does downward nominal wage rigidity dampen wage increases?
(2010) Beißinger, Thomas; Stüber, Heiko
Focusing on the compression of wage cuts, many empirical studies find a high degree of downward nominal wage rigidity (DNWR). However, the resulting macroeconomic effects seem to be surprisingly weak. This contradiction can be explained within an intertemporal framework in which DNWR not only prevents nominal wage cuts but also induces firms to compress wage increases. We analyze whether a compression of wage increases occurs when DNWR is binding by applying Unconditional Quantile Regression and Seemingly Unrelated Regression to a data set comprising more than 169 million wage changes. We find evidence for a compression of wage increases and only very small effects of DNWR on average real wage growth. The results indicate that DNWR does not provide a strong argument against low inflation targets.
Earnings shocks and tax-motivated income-shifting : evidence from European multinationals
(2011) Riedel, Nadine; Dharmapala, Dhammika
This paper presents a new approach to estimating the existence and magnitude of taxmotivated income shifting within multinational corporations. Existing studies of income shifting use changes in corporate tax rates as a source of identification. In contrast, this paper exploits exogenous earnings shocks at the parent firm and investigates how these shocks propagate across low-tax and high-tax multinational subsidiaries. This approach is implemented using a large panel of European multinational affiliates over the period 1995-2005. The central result is that parents? positive earnings shocks are associated with a significantly positive increase in pretax profits at low-tax affiliates, relative to the effect on the pretax profits of high-tax affiliates. The result is robust to controlling for various other differences between low-tax and high-tax affiliates and for country-pair-year fixed effects. Additional tests suggest that the estimated effect is attributable primarily to the strategic use of debt across affiliates. The magnitude of income shifting estimated using this approach is substantial, but somewhat smaller than that found in the previous literature.
Die Entwicklung des Lebensstandards im Dritten Reich : eine glücksökonomische Perspektive
(2011) Wahl, Fabian
The goal of this paper is to provide an explanation for the remarkable difference in the contemporary Germans positive self-assessment of their living conditions and the development of the most important economic welfare indicators (like GDP or consumption per capita) during the Third Reich. To explain this discrepancy, findings of the new research field of happiness economics are applied to the peacetime of the Third Reich to analyze the development of the standard of living in this period. First, the theory of adaption and aspiration is used to explain the growing satisfaction of the Germans after the Great Depression. In the second step, based on current life satisfaction studies, the development of the most important economic determinants of happiness during the 1930s is examined.
Generalized barriers to entry and economic development
(2009) Pyka, Andreas; Saviotti, Pier Paolo
In this paper we are going to analyze the dynamics of barriers to entry at the international level. In our model economic development takes place and continues in the long run due to the emergence of new sectors, which can compensate for the diminishing ability of mature sectors to create employment and growth. Each new sector is created by a pervasive innovation, which creates a new market and into and out of which there are entry and exit of firms. Depending on the inter-temporal coordination of the maturation of older sectors and of the maturation of new ones our model can give rise to development paths with growth rates ranging from high to negative, to fluctuations, to bubbles and to chaos. In the construction of our model we found inspiration in a number of growth models, both endogenous and evolutionary as well as on empirical work on structural change. The model also bears some similarity of style to history friendly models. Its unique feature is that it gives rise to an endogenously variable number of sectors. Unless new sectors are exact substitutes of older ones the model gives rise to growing variety. In fact, the main objective for which the model was initially constructed was to test some propositions implying that variety growth is a necessary requirement for long term economic development. Within our model the ability to create new sectors at the right times is the crucial determinant of the growth potential of an economic system. Thus, inter country differences in the barriers to entry into new sectors can be expected to give rise to different rates of growth and in the end to increasingly skewed world income distribution.
Guns and butter - but no margarine : the impact of Nazi economic policies on German food consumtion, 1933-38
(2010) Spoerer, Mark; Streb, Jochen
The German population's material standard of living during the 'peace years' of the Nazi regime (1933-38) is much debated. We use hitherto disregarded consumption data and the axiom of revealed preferences to test whether the material standard of living improved. We find that the food consumption bundle realized in 1935-36 must have been inferior to that of 1927-28 although GDP per capita was much higher. Even in 1937- 38 consumers were probably worse off compared to 1927-28. We conclude that increasing consumption constraints forced German consumers to a diet and thus to a material standard of living that were much more frugal than national income figures suggest.
How does subjective well-being evolve with age? A literature review
(2013) Sousa-Poza, Alfonso; Moeller, Valerie; López Ulloa, Beatriz Fabiola
This literature review provides an overview of the theoretical and empirical research in several disciplines on the relation between ageing and subjective well-being, i.e., how subjective well-being evolves across the lifespan. Because of the different methodologies, data sets and samples used, comparison among disciplines and studies is difficult. However, extant studies do show either a U-shaped, inverted U-shaped or linear relation between ageing and subjective well-being.
Innovation, economic diversification and human development
(2013) Pyka, Andreas; Hartmann, Dominik
In this paper we bridge a gap between innovation economics and the human development approach by analyzing positive and negative effects of different types of economic diversification on social welfare. Economic variety is a driver and outcome of economic development. However, diversification leads to ambiguous effects on the well-being of human agents: on the one hand, increasing variety augments the freedom of human agents to choose. On the other hand, it can overburden their capabilities to make economic decisions and can deteriorate their well-being. It becomes clear that human development policy has to go hand in hand with an industrial policy that promotes qualitative economic diversification. Depending on its dynamics, this diversification can be achieved via related and unrelated variety. We can expect a better design of development policies from a better understanding of the co-evolutionary development of variety, freedom of choice and well-being.
Integration durch Währungsunion? : der Fall der Euro-Zone
(2012) Spahn, Peter
Old OCA theory recommends to unite homogenous countries so that their macroeconomic interrelations do not pose severe stabilisation problems. New OCA theory rightly criticizes the 1960s flavour of the old approach and believes in the endogenous emergence of an OCA if countries use the facilities of an integrated financial market for their catching-up. Whereas in theories of intertemporal optimisation single agents and national economies succeed to go from indebtedness to development, in EMU they were tempted live beyond their intertemporal budget constraint. Professional observers tended to tolerate high current account deficits and loss of competitiveness as temporary phenomena by relying on the Lawson Doctrine. Actually, some EMU countries could avoid insolvency only by monetising their balance of payment deficit.
Intelligente (Software-)Agenten : eine neue Herausforderung für die Gesellschaft und unser Rechtssystem?
(2014) Müller-Hengstenberg, Claus D.; Kirn, Stefan
Inter-firm R&D networks in pharmaceutical biotechnology : what determines firm's centrality-based partnering capability?
(2013) Schwalbe, Ulrich; Riedel, Nadine; Krogmann, Yin
This paper analyses the inter-firm R&D network formed in the pharmaceutical biotechnology industry during the 1990s from different perspectives: theoretical network formation, firm's structural positions and its collaborations at the entire network level, and the determinants for firm's centrality-based partnering capability. The results indicate that pharmaceutical biotechnology industry has experienced a significant evolutional change in size and structure during 1991-1998. By considering individual structural positions, the descriptive statistics show that in the 1990s, established pharmaceutical companies developed into dominant star players with multiple partnerships while holding central roles in the R&D network. In the network analysis that emphasized aggregate network level, the degree-based and betweenness-based network centralization were not high implying that the distribution of overall positional advantages in the pharmaceutical biotechnology industry is, to a large degree, not unequal and even though most firms in this sector are linked to the R&D network, some of them are more active than others. The current analysis also shows that firm's efficiency, firm's dependency on its complementary resources and firm's experiences at managing partnerships are important determinants for firm's centrality-based partnering capability, which has important managerial implications for understanding firm's strategic partnering behaviour.
Inter-firm R&D networks in the global pharmaceutical biotechnology industry during 1985?1998 : a conceptual and empirical analysis
(2011) Krogmann, Yin; Schwalbe, Ulrich
This paper analyses a large database on inter-firm R&D cooperation formed in the pharmaceutical biotechnology industry during the period 1985?1998. The results indicate that network size largely grows, whereas the density of the network declines during the periods. In the network analysis that emphasizes individual structural positions, the empirical results show that small biotechnological companies had a crucial bridging role for the large pharmaceutical firms in the second half of the 1980s. In the 1990s, the bridge role of biotechnology companies became less important and established pharmaceutical companies developed into dominant start players with many collaborators while holding central roles in the research network. The current analysis also shows that degree-based and betweenness-based network centralization are both low implying that the overall positional advantages are relatively equally distributed in the inter-firm R&D network of the pharmaceutical biotechnology industry.

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