Challenges of the Euro

Intereconomics - „The lesson from previous episodes of trade reform is in part a story of political framing as well as a story of compensatory deals. Countries can calculate that they might...     

The income elasticity of household energy demand: a quantile regression analysis

This article examines variation in the income elasticity of household energy demand across the energy expenditure distribution using expenditure data from the five most recent Household Budget Surveys (HBSs) in Ireland: the 1987, 1994/1995, 1999/2000, 2004/2005 and 2009/2010 HBS. The analysis uses a two-stage instrumental variable quantile regression approach and is based on each HBS cross section, as well as the overall pooled observations. The estimated elasticities are compared across low- and high-energy-consumption scenarios and to a benchmark elasticity estimated using two-stage least squares. The results provide evidence that there is significant variation in the income elasticities across the energy expenditure distribution and that care must be taken when using the constant mean elasticity for policy purposes. More specifically, any examination of the future impact of a change in income support policy measures on energy consumption should recognize the substantial context-dependent variation in the income elasticity.     

On the level of cooperative behavior in a local-interaction model

We study local interaction within a population located on a connected graph. Subjects engage in several bilateral interactions during each round in a generalized Prisoners' Dilemma (PD). In each round of play one randomly selected player gets the possibility to update the action he plays in this PD. All individuals use the update rule Win Cooperate, Lose Defect, a multi-player variant of Tit-for-Tat. Theoretical results on the set of stable states of the associated dynamics are provided for the cases with and without rare mutations. Simulations provide insight into the probability distribution over these stable states. In both cases a rather high probability is assigned to stable states with a moderate level of cooperation implying that dominated strategies are used. Furthermore, the probability of reaching the stable state with Nash equilibrium play is small.     

The market for residential real estate brokerage services: Costs of production and economies of scale

Although the market for real estate brokerage services has been the subject of intense scrutiny for many years, little empirical evidence has been forthcoming regarding the performance of this market. This paper employs a translog cost function to model the underlying production function for the residential real estate brokerage industry. The results indicate that, except for very large firms, modest economies of scale persist throughout almost the entire range of output. Our results also indicate that while average firm size is increasing, many real estate firms are too small to take full advantage of the cost reductions possible with a larger scale of operation. Equally important, large firms do not command a competitive advantage over smaller firms, as fer as unit costs are concerned.     

Pareto efficiency in the jungle

We revisit the jungle economy of Piccione and Rubinstein (Econ J 117(July):883–896, 2007) in which the allocation of resources is driven by coercion. In this economy the unique equilibrium satisfies lexicographic maximization. We show that relaxing the assumptions on consumption sets and preferences slightly, allocations other than lexicographic maximizers can be jungle equilibria. We attribute this result to single unilateral taking where a stronger agent takes goods from only one weaker agent. Once multiple unilateral takings are introduced, we show that jungle equilibria coincide with lexicographic maximization under weak assumptions. However, we also present examples of equilibria that are Pareto inefficient, where voluntary gift giving by stronger agents is needed to achieve Pareto efficiency and even voluntary trade has a role in the jungle.     

What makes the stock market jump? An analysis of political risk on Hong Kong stock returns

This paper employs a components-jump volatility filter to investigate the possible market impact of political risk. The filter operates by identifying jump return dates, which are then associated with political events, allowing us to measure the market return and volatility effects of political announcements. Our empirical results show that political developments in Hong Kong have a significant impact on its market volatility and return. The results have some interesting implications for option pricing and political risk management.     

Exploring B-to-B e-commerce adoption trajectories in manufacturing SMEs

The intent of this paper is to capture the gradual unfolding of business-to-business (B-to-B) e-commerce adoption in small and medium-sized enterprises (SMEs). Empirical evidence was gathered in three separate but complementary phases: first, a pilot study to identify and validate metrics for B-to-B e-commerce adoption; second, an e-survey to gain an in-depth understanding of B-to-B e-commerce adoption and its related benefits; and third, a multiple case study to further validate the e-commerce adoption trajectories we observed and their underlying dynamics. Findings suggest logical evolutionary paths to the penetration of B-to-B e-commerce in SMEs. The cumulative and self-reinforcing nature of both e-commerce initiatives and the benefits derived therefrom points to the existence of e-commerce adoption trajectories.