Constitutional choice in ancient Athens: the evolution of the frequency of decision making

Contrary to modern representative democracies where elections tend to take place years apart, in the direct democracy of ancient Athens the assembly of the citizens met to decide policy up to forty times per year. The paper explores a model of constitutional choice where self-interested citizens decide how long to wait until they vote by maximising the net gain from an uncertain voting outcome. It is found that the frequency of voting increases unambiguously when the probability of being a member of the winning majority increases, and decreases with the loss from being a member of the losing minority and the resource cost of the vote. Under some plausible conditions, the frequency also rises with increases in the utility gain from the vote, the discount rate, and the required majority to pass a policy motion. It is argued that those conditions were met in Athens.     

How burning money requires a lot of rationality to be effective

This paper proposes an extension of the valuation equilibrium concept (Jehiel and Samet, 2007), which partly endogenises the underlying grouping of actions. The effect on equilibrium predictions is illustrated in a burning money game.     

Testing for rationality: the case of discrete choice data

When working with micro data on consumer demand, there are many different situations where decisions involve only discrete choices. In this context, conditions under which an underlying rational preference structure exists are derived. Moreover, by introducing flexibility into the model, it is possible to identify nonrational behavior in the sample.     

从经济理性到有限理性:经济学研究理性假设的演变

"经济理性"是经济学的传统研究假设,却因背离现实而受到质疑.基于行为人稀缺的心理资源和系统固有的不确定性而产生的"有限理性"正逐步取代"经济理性"成为经济学研究的理性假设.不同的理性观点可以从决策的视角得到系统地解释和比较.并且,随着理性假设的演变,经济行为的决策标准也相应从单一静态最优向多元动态平衡转变.     

Constitutional choice for the control of water pollution

Before passage of the Clean Water Act, water pollution was controlled by the common law of nuisance and the law of water rights. Had the common law not been superseded, it might have provided more ecologically sound pollution control than has occurred under the command-and-control statutory regime. The Clean Water Act imposes mechanical definitions and is subject to political interference. In contrast, the principle of the common law lies in its evolutionary and competitive nature, which is consistent with the market process. Meiners thanks the Political Economy Research Center of Bozeman, Montana for support during his visit in 1992. We thank Terry Anderson, Robert Natelson, Jane Shaw and Richard Stroup for helpful comments. We owe a large intellectual debt to Bob Staaf, who made us think about the relationship between competitive markets and the common law.     

Risk-Aversion in Constitutional Choice: Reply to Kyriacou

In his comment on my article on the possibility of discriminatory and non-consensual decsionmaking under Buchanan's veil of uncertainty (Müller 1998) Andreas Kyriacou proposes to take the players to be quasi-risk averse in order to secure fair and unanimous results at the constitutional level. As analytical tools of incorporating this premise into my model he not only suggests to assume that the individuals weigh losses higher than gains but also to take them as being rational maximiners. In this reply to his comment it is argued that both these points are inadequate to weaken my case against the veil's ability to guarantee unanimity and fairness of constitutional decisionmaking in view of a post-constitutional prisioners dilemma.     

From Mill to Weber: the meaning of the concept of economic rationality

Weber recognized explicitly that his concept of ideal-type is directly borrowed from economic theory and as it is commonly admitted from the German-speaking ‘marginalist school’. Nevertheless, the construction of ideal-types reminds greatly the definition of economic rationality made by John Stuart Mill, who also built up a concept to explain, in individualistic terms, the real world in a given historical and geographical context. The position defended here is that Weber generalizes Mill's methodological proposition of concept formation regarding economic rationality to accomplish his much larger project of determining the social factors responsible for the rationalization of the Western civilization.     

Policy instruments for evolution of bounded rationality: Application to climate-energy problems

We demonstrate how an evolutionary agent-based model can be used to evaluate climate policies that take the heterogeneity of strategies of individual agents into account. An essential feature of the model is that the fitness of an economic strategy is determined by the relative welfare of the associated agent as compared to its immediate neighbors in a social network. This enables the study of policies that affect relative positions of individuals. We formulate two innovative climate policies, namely a prize, altering directly relative welfare, and advertisement, which influences the social network of interactions. The policies are illustrated using a simple model of global warming where a resource with a negative environmental impact—fossil energy—can be replaced by an environmentally neutral yet less cost-effective alternative, namely renewable energy. It is shown that the general approach enlarges the scope of economic policy analysis.     

Maximum likelihood estimation of time-varying parameters: an application to the Athens Stock Exchange index

The problem of maximum likelihood estimation of time-varying parameters is considered. A hierarchical approach is proposed that involves, first, the estimation of the model order and parameters when they are assumed time-invariant. Second, for each parameter, an autoregressive (AR) model, with constant coefficients, is developed. This allows the parameters to change over time. Finally, the estimates of the AR coefficients for each parameter are used as initial conditions to a time-varying model with AR coefficients, which are allowed to change over time subject to some regularity constraints. This approach is then applied to the Athens Stock Exchange index, where the dominant forces affecting this index are analysed.     

中国宪法中的不成文宪法——理解中国宪法的新视角

本文从中国宪法文本与宪政实践之间的背离问题入手,提出了从不成文宪法的角度来理解中国宪政秩序的新思路。基于对英美宪法学说与宪政实践的分析,作者区分了古典的政制与现代的宪法律、政治宪法与法院宪法,进而主张任何国家的宪政运作实际上都依赖不成文宪法,从而奠定不成文宪法的法理学基础。在此基础上,文章选择中国宪法中关于国家建构中四个关键性问题,着重探讨中国不成文宪法的四个主要渊源,即成文宪章、宪法惯例、宪法学说及宪法性法律,并呼吁宪法学应当从中国现实的宪政生活中提炼具有普遍意义的宪政原理和制度。     

Liquidity commonality in order-driven trading: evidence from the Athens Stock Exchange

We examine the presence of liquidity commonality in the order-driven Athens Stock Exchange (ASE). Unlike the majority of liquidity commonality studies that focus on the bid–ask spread, our analysis extends deeper in the Limit Order Book, providing insight on the price impact of both small and large trades. We utilize a 6-month FTSE/ATHEX-20 intraday data set to estimate the liquidity factor model of Chordia et al. (2000). To this end, we conduct single-equation analysis as well as panel data analysis with the use of two-way clustered errors, correcting for simultaneous firm and time correlations. Moreover, we apply standard principal component analysis on stock liquidities to extract the marketwide liquidity component. We find that liquidity commonality is low at the bid–ask spread, whereas it increases deeper in the book; consequently, large traders face liquidity risks associated with both individual stock and marketwide illiquidity. Moreover, our empirical evidence hints that liquidity commonality is asynchronous, suggesting that the ASE trading process includes various levels of information speed. Our analysis contributes to the understanding of liquidity commonality in order-driven trading, especially in emerging markets like the ASE where trading activity is limited and information speed is low.     

宪政:现代税制之纲

宪法是税收法律之源，是反映人民共同意志的民主立法，也是保障纳税人利益不受侵犯的自由之法，宪政的基本精神和基本制度构架是决定我国未来税制改革方向的根本性因素；宪法所伸张的正义、平等、人权等价值观，在各种税收专门法中必须得到充分和准确的体现。确立保障生存权、有支付能力、公平税负、量力负担和便利等符合宪法原理的税收原则或总政策，是现代法治社会的基本要求和特征。现代税收应是从纳税者的权利与义务相统一的角度构造的概念，即作为法律上的权利与义务主体的纳税人，以履行纳税义务作为享有宪法规定的各项权利为前提，依照遵从宪法所制定的税收法律为依据，承担物质性的给付义务，从而使国家得以具备满足公民对公共服务需要的能力的活动。     

Market efficiency and the Euro: the case of the Athens stock exchange

The behaviour of an emerging market, the Athens Stock Exchange, after the introduction of the euro is investigated. The latter would make its returns easier to compare; reduce uncertainty; eliminate the exchange rate risk and as a result we expect the new currency to strengthen the argument, in favour of the EMH. The General ASE Composite Index and the FTSE/ASE 20, which consists of “high capitalisation” companies, are used. Five statistical tests are employed to test the residuals of the random walk model: the BDS, McLeod-Li, Engle LM, Tsay and Bicovariance test. Bootstrap and asymptotic values of these tests are estimated. Alternative models from the GARCH family (GARCH, EGARCH and TGARCH) are also presented in order to investigate the behaviour of the series. Lastly, linear, asymmetric and non-linear error correction models are estimated and compared. The preferred model (TGARCH) suggests that leverage effects are present and the news impact curve is asymmetric.     

From contract to mental model: Constitutional culture as a fact of the social sciences

This paper develops the concept of constitutional culture—the attitude, thoughts, and feelings about constitutional constraints and the nature, scope, and function of constitutionalism. Constitutional culture is approached as a complex emergent phenomenon bridging Hayekian cognitive and institutional insights. It can be studied as a mental model, a series of expectations and understandings about the constitutional order, how it is, and how it ought to be. The “map” and “model” approach from Hayek’s Sensory Order (1952) is employed to understand how individuals and (cautiously) groups of individuals at the national level approach constitutionalism. This paper goes beyond the more traditional one-size-fits-all approach where all individuals respond uniformly to incentives, as provided by the constitution qua contract. Instead, constitutionalism is tied up in the individual’s vision of the world, that is, what Hayek (1948) labels “the facts of the social sciences.” The paper concludes with four areas where constitutional culture can further the insights of constitutional political economy: comparative political economy, constitutional stickiness, constitutional maintenance, and the new development economics.     

Evidence on the rationality of expectations in the British manufacturing sector

Empirical support is shown for the propositionthat sports fans prefer the composition of their home team to remain the same from season to season. Controlling for price, income, population, team quality, league, year, the stadium effects, the regression results indicate that for each percentage point increase in the turnover of the composition of the team, attendance will fall by about 0.7%. The implications of this heretofore ignored tendency are briefly discussed.     

Constitutional coordination in unstable party systems: the Brazilian constitution of 1988

Constitutional assemblies are a common feature of many democratic transitions. However, the goal of coordinating constitutional choice would seem nearly impossible when assemblies are comprised of highly fragmented and volatile political parties. Building on Knight’s bargaining model, this article argues that the main challenge to coordination in unstable party systems is the procedural disequilibrium that results from incomplete information over breakdown payoffs. The likelihood of compromise in such circumstances is a function of the ideologies that frame constitutional choice and inform coalition-building. Thus, unstable party systems are not chaotic, although they may be deeply conflict-laden. These issues are illustrated empirically via the Brazilian Constitution of 1988, which demonstrates the possibilities for a stable constitutional order emerging from a fragmented and volatile party system.

Cost estimation of neonatal intensive care in Greece: the case of Athens maternity hospitals

Summary

This study aimed to estimate the hospitalisation costs for neonatal intensive care and to investigate any discrepancies with reimbursement by the social funds in Greece.

The study was based on a prospective selection of neonates admitted to the intensive care unit of two hospitals within a 3-month period in 2004. Data were collected and classified with respect to birthweight and gestational age. Microcosting recording of data was used. A National Health System hospital perspective was applied.

The study sample consisted of 99 neonates with mean cost per infant reaching €5,845 in contrast to the €3,952 reimbursed by the social security funds, showing a discrepancy between actual and nominal costs. Cost per infant was found to have an inverse relationship both with birthweight and gestational age. Personnel costs accounted for 59.9% of all resources consumed followed by enteral/parenteral feeding for 16.1% and pharmaceuticals expenses for 11.1%. The remaining covers the costs of consumables, diagnostic test and overheads (12.9%).