Christoph Schumacher

Trust - a Source of Success in Strategic Alliances?

I empirically test the role of trust in strategic alliances by using survey data from 67 German small and medium-sized enterprises (SMEs). Empirical findings indicate that high trust levels are a good predictor of alliance success. This result is encouraging, as it suggests that well-performing relationships can be differentiated from low performers on the basis of mutual trust. Furthermore, the study shows that the level of safeguards used in an alliance is decreasing in the level of trust and increasing in the gain from opportunistic behavior.

Advertising regulation and market drivers

Purpose – The purpose of this paper is to examine the regulation of advertising by considering market‐driven firms (those seeking to keep within the boundaries set by social and industry norms) and market drivers (those seeking to stretch boundaries to gain a competitive advantage). Thought is also given to the costs of regulation and tolerance to the social purse, and the benefits gained by compliance and violation.Design/methodology/approach – The authors develop a conceptual argument for boundary stretching where market drivers are present in a marketplace dominated by market‐driven firms. The authors then apply a game theory model to examine the conditions, the firm responses, and Government responses. In doing so the authors investigate incentives for non‐compliant behavior in a self‐regulated market and show that a firm can achieve a market advantage by stretching advertising boundaries.Findings – Results suggest that when government takes a “wait‐and‐see” approach of partial tolerance, then the mar...

You are One of Us Now! How Do Share Prices of Rivals React to Privatization?

By using a unique data set from the Turkish cement industry, we analyze the impact of privatization on the market value of rival firms. Privatization increases efficiency, which is bad news for rivals. But if an incumbent buys a state owned firm, this leads to a higher market concentration which is good news for rivals. We show that privatization leads to overall positive abnormal returns for rivals because the concentration effect outweighs the efficiency effect. Consistent with our theory, this effect is reinforced when the initial market concentration is high.

How to Have your Cake and Eat it Too: Resolving the Efficiency- Equity Trade-off in Minimum Wage Legislation

Minimum wages are usually assumed to be inefficient as they prevent the full exploitation of mutual gains from trade. Yet advocates of wage regulation policies have repeatedly claimed that this loss in market efficiency can be justified by the pursuit of ethical goals. Policy makers, it is argued, should not focus on efficiency alone. Rather, they should try to find an adequate balance between efficiency and equity targets. This idea is based on a two-worlds-paradigm that sees ethics and economics as two inherently conflicting ways of thinking. We, however, believe that this view of the relationship between ethics and economics is fundamentally flawed and blurs our understanding of how an ethically responsible regulation of the labour market should be conducted. In drawing on an economic-ethical approach that resolves the antinomy between efficiency and equity, we show that ethics and economics are, in fact, two sides of the same coin and that minimum wage legislation can only be ethically responsible, if it is at the same time economically efficient. In other words, we can have our cake and eat it too. On the basis of our approach, we develop two simple game theoretical models for different types of labour markets and derive policy implications from an economic-ethical viewpoint. We suggest that under the assumption of perfectly competitive labour markets a tax-funded wage subsidy is preferable over minimum wages, as it makes everyone better off. If, however, employers have monopsony power in the wage setting process, the minimum wage is justifiable under certain conditions.

Estimating risk preferences of bettors with different bet sizes

We extend the literature on risk preferences of a representative bettor by including odds-dependent bet sizes in our estimations. Accounting for different bet sizes largely reduces the standard errors of all coefficients. Substituting the coefficients from the model with equal bet sizes into the model with odds-dependent sizes leads to a sharp decline in the likelihood which shows that accounting for different amounts is important. Our estimations strongly reject the hypothesis that the overbetting of outcomes with low probabilities (favorite-longshot bias) can be explained by risk-seeking bettors. Depending on the exact specification within cumulative prospect theory, the data can best be described by an overweighting of small probabilities which is more pronounced in the gain domain. Models allowing for two parameters for probability weighting each in the gain- and in the loss domain are superior.

Do Capitation-based Reimbursement Systems Underfund Tertiary Healthcare Providers? Evidence from New Zealand: Capitation Systems Penalize Tertiary Healthcare Providers

One of the main concerns about capitation-based reimbursement systems is that tertiary institutions may be underfunded due to insufficient reimbursements of more complicated cases. We test this hypothesis with a data set from New Zealand that, in 2003, introduced a capitation system where public healthcare provider funding is primarily based on the characteristics of the regional population. Investigating the funding for all cases from 2003 to 2011, we find evidence that tertiary providers are at a disadvantage compared with secondary providers. The reasons are that tertiary providers not only attract the most complicated, but also the highest number of cases. Our findings suggest that accurate risk adjustment is crucial to the success of a capitation-based reimbursement system. Copyright

Using data-driven and process mining techniques for identifying and characterizing problem gamblers in New Zealand

This paper uses data-driven techniques combined with established theory in order to analyse gambling behavioural patterns of 91 thousand individuals on a real-world fixed-odds gambling dataset in New Zealand. This research uniquely integrates a mixture of process mining, data mining and confirmatory statistical techniques in order to categorise different sub-groups of gamblers, with the explicit motivation of identifying problem gambling behaviours and reporting on the challenges and lessons learned from our case study. We demonstrate how techniques from various disciplines can be combined in order to gain insight into the behavioural patterns exhibited by different types of gamblers, as well as provide assurances of the correctness of our approach and findings. A highlight of this case study is both the methodology which demonstrates how such a combination of techniques provides a rich set of effective tools to undertake an exploratory and open-ended data analysis project that is guided by the process cube concept, as well as the findings themselves which indicate that the contribution that problem gamblers make to the total volume, expenditure and revenue is higher than previous studies have maintained.

Order Ethics, Economics, and Game Theory

We offer a concise introduction to the methodology of order-ethics and highlight how it connects aspects of economic theory and, in particular, game theory with traditional ethical considerations. The discussion is conducted along the lines of five basic propositions, which are used to characterize the methodological approach of order ethics.

Is the Minimum Wage Ethically Justifiable? An Order-Ethical Answer

Is the minimum wage ethically justifiable? In this chapter, we attempt to answer this question from an order-ethical perspective. To this end, we develop two simple game theoretical models for different types of labour markets and derive policy implications from an order-ethical viewpoint. Our investigation yields a twofold conclusion. Firstly, order ethicists should prefer a tax-funded wage subsidy over minimum wages if they assume that labour markets are perfectly competitive. Secondly, order ethics suggests that the minimum wage can be ethically justified if employers have monopsony power in the wage setting process. As it turns out, then, order ethics neither favours nor disfavours the minimum wage. Rather, it implies conditions under which this form of labour market regulation is justified and, hence, allows empirical science to play a great role in answering the ethical questions that arise in the context of the minimum wage debate. This illustrates one of order ethics’ strengths, viz. the fact that it tends to de-ideologize the debate about ethical issues.

Parimutuel contests with strategic risk-sensitive bettors

ABSTRACT Existing models in the parimutuel betting literature typically explain betting data by either assuming a single, representative bettor with certain risk preferences or by assuming that a number of risk neutral bettors compete strategically within a game theoretic framework. We construct a theoretical framework of parimutuel markets in which we model both strategic interaction and individual bettor risk preferences, distinguishing between sophisticated insiders and recreational outsiders. We solve this model analytically for the optimal insider betting amount in a static symmetric Nash equilibrium. A new data set of 126 million individual horse race bets in New Zealand from 2006 to 2014 allows us to calibrate the model. We find that insiders (those betting