Stefan Buehler, Dennis Gärtner, Daniel Halbheer, Deregulating Network Industries: Dealing with Price-Quality Tradeoffs, In: Working paper series / Socioeconomic Institute, No. No. 402, 2005. (Working Paper)
This paper examines the effects of introducing competition into monopolized network industries on prices and infrastructure quality. Analyzing a model with reduced-form demand, we first show that deregulating an integrated monopoly cannot simultaneously decrease the retail price and increase infrastructure quality. Second, we derive conditions under which reducing both retail price and infrastructure quality relative to the integrated monopoly outcome increases welfare. Third, we argue that restructuring and setting very low access charges may yield welfare losses, as infrastructure investment is undermined. We provide an extensive analysis of the linear demand model and discuss policy implications. |
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Daniel Waldenström, Bruno Frey, Did Nordic Countries Recognize the Gathering Storm of World War II? Evidence from the Bond Markets, In: Working paper series / Institute for Empirical Research in Economics, No. No. 336, 2005. (Working Paper)
This paper analyzes and compares different ways of assessing how people perceived impending threats of war in the past. Conventional Nordic historiography of World War IInclaims there were few, if any, people in the Nordic countries who perceived a significantlynincreased threat of war between 1938 and early 1940. At the same time, historical methodsnface problems when it comes to capturing the often tacitly held beliefs of a large numbernof people in the past. In this paper, we analyze these assessments by looking at suddennshifts in sovereign debt yields and spreads in the Nordic bond markets at that time. Ournresults suggest that Nordic contemporaries indeed perceived significant war risk increasesnaround the time of major war-related geopolitical events. While these findings questionnsome – but not all – of standard Nordic World War II historiography, they also demonstrate the value of analyzing historical market prices to reassess the often tacitly held views and opinions of large groups of people in the past. |
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Philippe Mahler, Rainer Winkelmann, Secondary School Track Selection of Single - Parent Children Evidence from the German Socio-Economic Panel, In: Working paper series / Socioeconomic Institute, No. No. 415, 2005. (Working Paper)
In present day Germany, one in seven children is raised in a single parent household. We investigate the effect of single parenthood on children’s educational attainment, measured by the school track at the age 14, using ordered probit models. We study whether the effect of living in single parenthood during early or late childhood differs. Finally, we ask whether the family effect operates through resources – fewer income and parental time available for the child –, or through adverse effects on psychological well-being. The data used in this study are a nationally representative sample of 14 year old children drawn from the German Socio-Economic Panel. |
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Matthias Benz, The Relevance of Procedural Utility for Economics, In: Working paper series / Institute for Empirical Research in Economics, No. No. 256, 2005. (Working Paper)
This paper aims at showing the relevance of procedural utility for economics: people do not only care about outcomes, as usually assumed in economics, they also value the processes and conditions leading to outcomes. The psychological foundations of procedural utility are outlined and it is discussed how the concept differs from other related approaches in economics, like outcome utility, outcome fairness or intentions. Institutions at the level of society and fair procedures are shown to be sources of procedural utility, and novel empirical evidence on the role of procedural utility in important areas of the economy, polity and society is presented. |
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Wolfgang R Köhler, Unique Equilibria in the Rubinstein Bargaining Model when the Payoff Set is Non-Convex, In: Working paper series / Institute for Empirical Research in Economics, No. No. 255, 2005. (Working Paper)
I give necessary and sufficient conditions for the uniqueness of the equilibrium in a wide class of Rubinstein bargaining models. The requirements encompass a class of non-convex or disconnected payoff sets with discontinuous Pareto frontiers. The equilibrium of the non-cooperative game is unique if the objective function of the corresponding Nash-bargaining game has a unique maximum. I extend the analysis to games where the time between offers is not constant. |
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Ernst Fehr, Lorenz Götte, Do Workers Work More if Wages Are High? Evidence from a Randomized Field Experiment, In: Working paper series / Institute for Empirical Research in Economics, No. No. 125, 2005. (Working Paper)
Most previous studies on intertemporal labor supply found very small or insignificantnsubstitution effects. It is not clear, however, whether these results are due to institutionalnconstraints on workers’ labor supply choices or whether the behavioral assumptions of thenstandard life cycle model with time separable preferences are empirically invalid. We conducted a randomized field experiment in a setting in which workers were free to choose their working times and their efforts during working time. We document a large positive wage elasticity of overall labor supply and an even larger wage elasticity of labor hours, which implies that the wage elasticity of effort per hour is negative.nWhile the standard life cycle model cannot explain the negative effort elasticity, we show that a modified neoclassical model with preference spillovers across periods and a model withnreference dependent, loss averse preferences are consistent with the evidence. With the help of anfurther experiment we can show that only loss averse individuals exhibit a significantly negativeneffort response to the wage increase and that the degree of loss aversion predicts the size of the negative effort response. |
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Philippe Mahler, Rainer Winkelmann, Single Motherhood and (Un)Equal EducationalOpportunities: Evidence for Germany, In: Working paper series / Socioeconomic Institute, No. No. 512, 2005. (Working Paper)
We examine the effect of single motherhood on children’s secondary school track choice using 12-year-old children drawn from the German Socio-Economic Panel. In line with previous studies for the U.S., the U.K. and Sweden, we find a negative correlation between single motherhood and children’s educational attainment. Looking for alternative explanations for this correlation, we use probit regression models to control for factors related to single motherhood such as higher educational background, lower household income and higher labor supply of the mother. Our evidence suggests that single motherhood reduces school attainment mainly because it is associated with lower resources (household income) available for the child. |
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Peter Zweifel, The Purpose and Limits of Social Health Insurance, In: Working paper series / Socioeconomic Institute, No. No. 509, 2005. (Working Paper)
This contribution seeks to answer two related questions. First, what is the purpose of social health insurance? Or put in slightly different terms, what are the reasons for social (or public) health insurance to exist, even to dominate private health insurance in most developed countries? And second, what are the limits of social health insurance? Can one say that there is "too much" social health insurance in the following two senses: Should the balance be shifted towards the private alternative? And is the degree of coverage excessive? |
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Bruno Frey, What Values Should Count in the Arts? The Tension between Economic Effects and Cultural Value, In: Working paper series / Institute for Empirical Research in Economics, No. No. 253, 2005. (Working Paper)
The basic distinction made in this volume compares “economic value”, expressed in monetary terms, to “cultural value”, reflecting cultural, aesthetic and artistic significance.nThis paper makes a different distinction which is rarely made explicit but which is ofncentral importance to the decision process in cultural policy. On the one hand, “value” is attached to the economic effects of cultural activities: When cultural values are created, economic activity is bolstered. The increase of commercial actitivities induced is measured by the so-called “impact effect”. On the other hand, the value of culture isnreflected in the increased utility going to consumers and non-consumers of a particularncultural activity. This type of value is measured by “willingness to pay studies”. I argue that these two values dominate cultural policy but they capture totally different aspects and are proferred by different kinds of communities. |
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Johannes Schwarze, Rainer Winkelmann, What can happiness research tell us about altruism? Evidence from the German Socio-Economic Panel, In: Working paper series / Socioeconomic Institute, No. No. 503, 2005. (Working Paper)
Much progress has been made in recent years on developing and applying a direct measure of utility using survey questions on subjective well-being. In this paper we explore whether this new type of measurement can be fruitfully applied to the study of interdependent utility in general, and altruism between parents and adult children who moved away from home in particular. We introduce an appropriate econometric methodology and, using data from the German SocioEconomic Panel for the years 2000-2004, find that the parents’ self-reported happiness depends positively on the happiness of their adult children. A one standard deviation move in the child’s happiness has the same effect as a 45 percent move in household income. |
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Patrick Leoni, Banking Regulation without Commitment to Audit, In: Working paper series / Institute for Empirical Research in Economics, No. No. 251, 2005. (Working Paper)
We consider a regulator providing deposit insurance to a bank with private information about its investment portfolio. As typical in practice, we assume that the regulator does not commit to auditing afternany risk report from the bank. We first show that the optimal contract can be implemented through a direct revelation mechanism. We also show that, at the optimal contract, a high risk bank has incentivesnto misreport. We thus establish that extraction of truthful riskninformation, as done in current regulatory practice, is not compatible with the maximization of social welfare. |
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Ernst Fehr, Jean-Robert Tyran, Individual Irrationality and Aggregate Outcomes, In: Working paper series / Institute for Empirical Research in Economics, No. No. 252, 2005. (Working Paper)
There is abundant evidence that many individuals violate the rationality assumptionsnroutinely made in economics. However, powerful evidence also indicates that violations ofnindividual rationality do not necessarily refute the aggregate predictions of standard economicnmodels that assume full rationality of all agents. Thus, a key question is how the interactions between rational and irrational people shape the aggregate outcome in markets and other institutions. We discuss evidence indicating that strategic complementarity and strategic substitutability are decisive determinants of aggregate outcomes. Under strategic complementarity, a small amount of individual irrationality may lead to large deviations from the aggregate predictions of rational models, whereas a minority of rational agents may suffice to generate aggregate outcomes consistent with the predictions of rational models under strategic substitutability. |
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Simon Loertscher, Yves Schneider, Switching Costs, Firm Size, and Market Structure, In: Working paper series / Socioeconomic Institute, No. No. 508, 2005. (Working Paper)
In many markets, homogenous goods and services are sold both by large global frms and small local frms. Surprisingly, the large frms charge, often substantially, higher prices. Examples include hotels, airlines, and coffee shops. This paper provides a parsimonious model that can account for these pricing patterns. In this model, consumers face costs when switching from one supplier to another and consumers change locations with a given positive probability. Consequently, large frms or "chain stores" insure consumers against this switching cost. The model predicts that chain stores and local stores coexist in equilibrium and that chain stores charge higher prices and yet attract more consumers than local stores. As consumer mobility increases, the profits of both local stores and chain stores increase, but the chain stores' profts increase at a faster rate. |
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Stefan Buehler, Armin Schmutzler, Intimidating Competitors Endogenous Vertical Integration and Downstream Investment in Successive Oligopoly, In: Working paper series / Socioeconomic Institute, No. No. 409, 2005. (Working Paper)
We examine the interplay of endogenous vertical integration and costreducing downstream investment in successive oligopoly. We start from a linear Cournot model to motivate our more general reducedform framework. For this general framework, we establish the following main results: First, vertical integration increases own investment and decreases competitor investment (intimidation effect). Second, asymmetric equilibria typically involve integrated firms that invest more into effciency than their separated counterparts. Our findings suggest that asymmetric vertical integration is a potential explanation for the initial difference between leader and laggard in investment games. |
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Pavlo R Blavatskyy, Ganna Pogrebna, Myopic Loss Aversion Revisited: The Effect of Probability Distortions in Choice Under Risk, In: Working paper series / Institute for Empirical Research in Economics, No. No. 249, 2005. (Working Paper)
When the performance of a risky asset is frequently assessed, the probability of detecting a loss is high, which averts the loss averse investors. This effect is known as myopic loss aversion (MLA). This paper reexamines several recent experimental studies documenting the existence of MLA. A closer look at the experimental data reveals that the effect of MLA is largely neutralized by the overweighting of small probabilities and the underweighting of moderate and high probabilities. Remarkably, the two effects exactly balance each other out for conventional parameterizations of cumulative prospect theory. MLA alone cannot explain the observed investment decisions. |
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Ernst Fehr, Urs Fischbacher, Michael Kosfeld, Neuroeconomic Foundations of Trust and Social Preferences, In: Working paper series / Institute for Empirical Research in Economics, No. No. 221, 2005. (Working Paper)
This paper discusses recent neuroeconomic evidence related to other-regarding behaviors and the decision to trust in other people’s other-regarding behavior. This evidencensupports the view that people derive nonpecuniary utility (i) from mutual cooperation in socialndilemma (SD) games and (ii) from punishing unfair behavior. Thus, mutual cooperation and the punishment of free riders in SD games is not irrational, but better understood as rationalnbehavior of people with corresponding social preferences. We also report the results of anrecent study that examines the impact of the neuropeptide Oxytocin (OT) on trusting andntrustworthy behavior in a sequential SD. Animal studies have identified Oxytocin as anhormone that induces prosocial approach behavior, suggesting that it may also affect prosocialnbehavior in humans. Indeed, the study shows that subjects given Oxytocin exhibit much morentrusting behavior, suggesting that OT has a direct impact on certain aspects of subjects’ social preferences. Interestingly, however, although Oxytocin affects trusting behavior, it has no effect on subjects’ trustworthiness. |
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Armin Falk, Ernst Fehr, Christian Zehnder, The Behavioral Effects of Minimum Wages, In: Working paper series / Institute for Empirical Research in Economics, No. No. 247, 2005. (Working Paper)
The prevailing labor market models assume that minimum wages do not affect the labor supply schedule. We challenge this view in this paper by showing experimentally that minimum wages have significant and lasting effects on subjects’ reservation wages. The temporary introduction of a minimum wage leads to a rise in subjects’ reservation wages which persists even after the minimum wage has been removed. Firms are therefore forced to pay higher wages after the removal of the minimum wage than before its introduction. As a consequence, the employment effects of removing the minimum wage are significantly smaller than are the effects of its introduction. The impact of minimum wages on reservation wages may also explain the anomalously low utilization of subminimum wages if employers are given the opportunity of paying less than a minimum wage previously introduced. It may furthernexplain why employers often increase workers' wages after an increase in the minimum wagenby an amount exceeding that necessary for compliance with the higher minimum. At a morengeneral level, our results suggest that economic policy may affect people’s behavior by shaping the perception of what is a fair transaction and by creating entitlement effects. |
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Armin Falk, Michael Kosfeld, The Hidden Costs of Control, In: Working paper series / Institute for Empirical Research in Economics, No. No. 250, 2005. (Working Paper)
In this paper we analyze the behavioral consequences of control on motivation. Wenstudy a simple experimental principal-agent game, where the principal decides whethernhe controls the agent by implementing a minimum performance requirement before the agent chooses a productive activity. Our main finding is that a principal's decisionnto control has a negative impact on the agent's motivation. While there is substantial individual heterogeneity among agents, most agents reduce their performance as a response to the principals' controlling decision. The majority of the principals seem to anticipate the hidden costs of control and decide not to control. In several treatmentsnwe vary the enforceable level of control and show that control has a non-monotonic effect on the principal's payoff. In a variant of our main treatment principals can also set wages. In this gift-exchange game control partly crowds out agents' reciprocity. The economic importance and possible applications of our experimental results are further illustrated by a questionnaire study which reveals hidden costs of control in various real-life labor scenarios. We also explore possible reasons for the existence of hidden costs of control. Agents correctly believe that principals who control expect to get less than those who don't. When asked for their emotional perception of control, most agents who react negatively say that they perceive the controlling decision as a signal of distrust and a limitation of their choice autonomy. |
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Tania Singer, Ernst Fehr, The Neuroeconomics of Mind Reading and Empathy, In: Working paper series / Institute for Empirical Research in Economics, No. No. 222, 2005. (Working Paper)
"The most fundamental solution concepts in Game Theory – Nash equilibrium, backward induction, and iterated elimination of dominated strategies – are based on the assumption that people are capable of predicting others' actions. These concepts require people to be able to view the game from the other players’ perspectives, i.e. to understand others’ motives and beliefs. Economists still know little about what enables people to put themselves into others’nshoes and how this ability interacts with their own preferences and beliefs. Social neuroscience provides insights into the neural mechanism underlying our capacity to represent others' intentions, beliefs, and desires, referred to as ""Theory of Mind"" or ""mentalizing"", and the capacitynto share the feelings of others, referred to as ""empathy"". We summarize the major findings about the neural basis of mentalizing and empathizing and discuss some implications for economics." |
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Francesco Audrino, Enrico De Giorgi, Beta Regimes for the Yield Curve, In: Working paper series / Institute for Empirical Research in Economics, No. No. 244, 2005. (Working Paper)
We propose an a±ne term structure model which accommodates non-linearities in the drift andnvolatility function of the short-term interest rate. Such non-linearities are a consequence of discrete beta-distributed regime shifts constructed on multiple thresholds. We derive iterative closed-form formulanfor the whole yield curve dynamics that can be estimated using a linearized Kalman filter. Fitting the model on US data, we collect empirical evidence of its potential in estimating conditional volatilitynand correlation across yields. |
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