Experiments in which subjects play simultaneously several finite prisoner's dilemma supergames with and without an outside option reveal that: (i) subjects use probabilistic start and endeffect behaviour, (ii) the freedom to choose whether to play the prisoner's dilemma game enhances...

We model green markets in which purchasers, either firms or consumers, have higher willingness-to-pay for less polluting goods. The effectiveness of pollution reduction policies is examined in a duopoly setting. We show that duopolists' strategic behaviour may increase pollution levels. Maximum...

This paper examines factors explaining subcontracting decisions in the construction industry. Rather than the more common cross-sectional analyses, we use panel data to evaluate the influence of all relevant variables. We design and use a new index of the closeness to small numbers situations to...

The principal aim of this paper is to estimate a stochastic frontier cost function and an inefficiency effects model in the analysis of the primary health care services purchased by the public authority and supplied by 180 providers in 1996 in Catalonia. The evidence from our sample does not...

Theorem 1 of Euler’s paper of 1737 'Variae Observationes Circa Series Infinitas', states the astonishing result that the series of all unit fractions whose denominators are perfect powers of integers minus unity has sum one. Euler attributes the Theorem to Goldbach. The proof is one of those...

The old, understudied electoral system composed of multi-member districts, open ballot and plurality rule is presented as the most remote scene of the origin of both political parties and new electoral systems. A survey of the uses of this set of electoral rules in different parts of the world...

This paper proposes a framework to examine business ethical dilemmas and business attitudes towards such dilemmas. Business ethical dilemmas can be understood as reflecting a contradiction between a socially detrimental process and a self-interested profitable consequence. This representation...

This paper generalizes the original random matching model of money by Kiyotaki and Wright (1989) (KW) in two aspects: first, the economy is characterized by an arbitrary distribution of agents who specialize in producing a particular consumption good; and second, these agents have preferences...

In this paper we estimate wage equations for the Spanish industry using time series data on 85 industrial sectors, which allows us to distinguish between aggregate and sector specific effects in wage determination. Industry wages respond mainly to economy wide labour market conditions and to a...