经济学向何处去——金融危机以来的经济学反思

自2008年全球金融危机爆发以来,经济学界有关经济学的反思一直不断。理论方面,宏观经济理论和模型以及“有效市场假说”的有效性成为争论的焦点;政策领域,关于财政政策的有效性和通胀目标的设定出现了重大分歧;研究方法上,围绕着数学与经济学之间的关系以及经济学模型化方法纷争不断。然而,反思中也呈现出共识因素,从而揭示了经济学未来可能的发展方向。理论上,金融因素及更为现实的市场缺陷和摩擦因素将更多地被纳入经济学理论和模型中进行讨论,并且处理这些因素的模型也将更趋多元化;政策上,亟须发展出一套理论框架为财政政策和更为广泛的货币政策提供理论依据,货币政策将回归到数量工具、价格工具和其他工具并用的传统;方法上,超越数学的更为广泛意义上的多样化技术工具将积极发挥作用,模型会向更具现实性因而也更为复杂化的方向发展。除了危机的外部冲击外,经济学的这种路径转向可能还需要该学科内部制度性激励结构的相应变革。     

Risk identification in product innovation projects: new perspectives and lessons learned

The paper addresses the improvement of innovation project (IP) risk identification by applying the RBS (Risk Breakdown Structure) method, and represents a follow-up analysis of the subject (a case of IP before and after applying the method). The activities of risk identification are an initial phase in most of risk management processes and classifications. High-level risk-taking is one of the key characteristics of IPs, due to the fact that this type of projects is related to implementation of new ideas. An example illustrates the combination of RBS/WBS for evaluating the risk concentration, called Risk Breakdown Matrix. This research has proven that implementation of the presented approach in the context of the Serbian market can improve efficiency of all phases of the project, especially those related to planning phase.     

A cognition paradigm clash: Simon,situated cognition and the interpretation of bounded rationality

Simon’s notion of bounded rationality is deeply intertwined with his activity as a cognitive psychologist and founder of so-called cognitivism, a mainstream approach in cognitive psychology until the 1980s. Cognitivism, understood as ‘symbolic information processing,’ provided the first cognitive psychology foundation to bounded rationality. Has bounded rationality since then fully followed the development of cognitive psychology beyond symbolic information processing in the post-Simonian era? To answer this question, this paper focuses on Simon’s opposition during the 1990s to a new (paradigmatic) view of cognition called situated cognition, which has since put into question the entire view in cognitive psychology of humans as symbolic information processors. This paper then reads the cognitivism/situated cognition debate through the lens of current bounded rationality research in economics, in order (i) to inquire into whether it has tackled the issues in that controversy; (ii) to envisage possible new foundations for a cognitive psychology-based bounded rationality.     

发展中国家经济安全问题的制度分析

在市场经济全球化迅速发展的背景下,制度因素已成为影响发展中国家经济安全的最大瓶颈.因此,拟从新制度主义的视角,从制度结构和制度供求两个维度对发展中国家经济安全的影响机制进行深入系统的阐释,在此基础之上,提出应对经济安全问题的具体对策和措施.     

品牌经济学的理论基础——引入品牌的需求曲线及其经济学分析

需求定律是经济学分析的理论基础之一,品牌经济学的理论基础为引入品牌的需求曲线或考虑选择成本的需求定律。把品牌引入经济学中后,品牌信用度的提高使需求曲线右移并变得更为陡峭,同时品牌信用度的提高改变了需求曲线的位置,使得均衡价格提高,均衡数量增加,增加了消费者剩余和生产者剩余,提高了社会福利水平。文章为“品牌战”替代“价格战”提供了理论依据,即通过品牌建设提高品牌信用度,使得在价格提高的条件下需求量增加,而这只有在需求曲线改变位置时方能做到。     

对科技型中小企业研发的新思考

研发是科技型中小企业技术创新的动力之源，也是企业在激烈的市场竞争中求生存、谋发展的必然选择。文章对影响企业的研发因素进行了分析，在此基础上，指出了企业进行研发的路径选择以及企业在研发中应当注意的一些问题。     

Choosing for others

Experiments conducted in the US and France were used to study how individuals make trade-offs between health and taste for themselves and others. When someone receives a choice made for them that differs from their preference, they experience a welfare loss; at least in the short-term. We measure the empirical magnitude of this loss, and suggest it play a role in assessing the desirability of paternalistic policies motivated by behavioural economics. We show that the welfare loss changes with the provision of new information and the impact of this information differs for the two countries.     

Vicarelli’s Keynes and the New-Keynesian analytical method

This article provides a critical review of the foundations of the new Keynesian apparatus, to evaluate the actual strength of the Keynesian inheritance. As a reference of the Keynesian vision, Fausto Vicarelli’s recognition of the Keynesian message is adopted. The critical recognition of the new Keynesian methodology focuses on its analytical foundations, the recent extensions and on the criticality of its empirical performances and controls. The new Keynesian construction is shown to lack truly Keynesian roots in at least three key theoretical features: the role of the microfoundations, the stability of equilibrium, and expectations formation. The directions of an ongoing research narrowing the new Keynesian theoretical fracture from Keynesian economics are addressed.     

Marxism,Crypto-Marxism and the Political Economy of Capitalism

ABSTRACT

This article conducts groundwork for a discussion of Marx’s influence through examining the boundaries of the specifically Marxian school of economics. This Marxian school extends well beyond the bounds of the self-identified Marxian school. Marx’s influence, Marxian themes and effectively Marxian theory can be found in several important heterodox traditions of economics, though this is often unacknowledged. A consideration of the proper boundaries of the Marxian school of economics is essential for a full understanding of Marx’s legacy and could contribute to the emergence of a more unified heterodoxy in economics.     

Giffen goods and market making

Summary. This paper shows that information effects per se are not responsible for the Giffen goods anomaly affecting traders demands in multi asset noisy, rational expectations equilibrium markets. The role that information plays in traders strategies also matters. In a market with risk averse, uninformed traders, informed agents have a dual trading motive: speculation and market making. The former entails using prices to assess the effect of error terms; the latter requires employing them to disentangle noise traders demands within aggregate orders. In a correlated environment this complicates the signal extraction problem and may generate upward sloping demand curves. Assuming (i) that competitive, risk neutral market makers price the assets or that (ii) uninformed traders risk tolerance coefficient grows unboundedly, removes the market making component from informed traders demands rendering them well behaved in prices.Received: 30 April 2002, Revised: 3 December 2003, JEL Classification Numbers: G100, G120, G140.Support from the Barcelona Economics Program of CREA and the Ente per gli Studi Monetari e Finanziari Luigi Einaudi, are gratefully acknowledged. I thank Anat Admati, Jordi Caballé, Giacinta Cestone, and Xavier Vives for useful suggestions. The comments provided by the Associate Editor and an anonymous referee greatly improved the papers exposition.