Evolutionary Stability in the Ultimatum Game

Biologically motivated concepts of evolutionary stability, like the ESS, consider robustness against tiny invasions of mutants. This paper considers larger invasions and proposes an extended stability calculus. The new concept is applied to the ultimatum game and gives an evolutionary explanation for the emergence of egalitarian, "fair" behaviour.     

A general test for time dependence in parameters

A new test for time‐dependent parameters is proposed. The Trig‐test is based on a trigonometric expansion to approximate the unknown functional form of the variation in the parameters concerned. It is shown to have the correct empirical size and excellent power to detect structural breaks and stochastic parameter variation. The appropriate use of the Trig‐test is demonstrated by testing for structural breaks in the US inflation rate. The test detects a statistically significant increase in the US inflation rate beginning in the early 1970s and lasting through to the early 1980s. Copyright © 2004 John Wiley & Sons, Ltd.     

The Relationship of Persuasion Knowledge,Identification of Commercial Intent and Persuasion Outcomes in Advergames—the Role of Media Context and Presence

Across two studies, the authors investigate the extent to which children’s persuasion knowledge of an advertising tactic (advergame and TV commercial) and their level of engagement with the medium (presence) influence their identification of commercial content and persuasion outcomes. In line with theoretical predictions of the persuasion knowledge model, results showed that those children who had more knowledge about advertisers’ tactics were more likely to identify brands and commercial content in the advergame and less likely to be influenced. However, a high level of presence in the medium moderated the effect of persuasion knowledge on persuasion outcomes.     

Forecasting Euro‐Area Macroeconomic Variables Using a Factor Model Approach for Backdating

We suggest to use a factor model based backdating procedure to construct historical Euro‐area macroeconomic time series data for the pre‐Euro period. We argue that this is a useful alternative to standard contemporaneous aggregation methods. The article investigates for a number of Euro‐area variables whether forecasts based on the factor‐backdated data are more precise than those obtained with standard area‐wide data. A recursive pseudo‐out‐of‐sample forecasting experiment using quarterly data is conducted. Our results suggest that some key variables (e.g. real GDP, inflation and long‐term interest rate) can indeed be forecasted more precisely with the factor‐backdated data.     

Fixing the Leak: Unemployment Incidence before and after a Major Reform of Unemployment Benefits in Germany

We present first empirical results on the effects of a large scale reduction in unemployment benefit entitlement lengths on unemployment inflows in Germany. We show that this highly disputed element of the Hartz‐Reforms in 2006 induced a rush of workers and firms to take advantage of the previous legislation in its last days. Furthermore, we find a considerable decline in transitions to unemployment and an increase in employment rates among older workers after the reform. Our results provide new evidence for the importance of changes in unemployment inflows for the analysis of changes in unemployment outflows.     

The intra‐day price discovery process between the Singapore Exchange and Taiwan Futures Exchange

This paper focuses on the increasing competition between exchanges for listing similar index futures contracts and the impact this has on information dissemination between various markets. Specifically, using both the Hasbrouck and Gonzalo–Granger methodologies for extracting the information content held in each market, a comparison of information efficiencies between the Singapore Exchange and the Taiwan Futures Exchange is examined for Taiwan Index Futures listed in both markets. The results show not only a common stochastic trend between index futures and their underlying indices, but also provide strong evidence to suggest price discovery primarily originates from the Singapore futures market. There are direct implications of this result for both financial exchanges and traders—in particular, that traders realize price determination can arise from both futures markets, and the need for exchanges to maintain a reputation as an information center for these similarly traded financial instruments. © 2002 John Wiley & Sons, Inc. Jrl Fut Mark 22: 219–240, 2002