Rationality without Transitivity

In this article rational choice behavior is investigated without assuming transitivity or completeness of the underlying preferences. These standard properties are replaced by a property concerning dominant alternatives. This permits the existence of preference cycles among alternatives which are dominated, while still ensuring the existence of a rational choice correspondence. We will also realize that some rational choice rules still hold in this context. Further we will see that in equilibrium analysis the existence of a competitive equilibrium follows when transitivity and completeness is replaced by this domination property.     

What kind of preference maximization does the weak axiom of revealed preference characterize?

A (multivalued) choice is justified if no two chosen alternatives are preferred to each other, and if all chosen alternatives are preferred to all rejected alternatives. This concept permits a connection between the behavioral property expressed by WARP and a weak form of preference maximization. I am grateful to Michele Lombardi, Michael Mandler, Paola Manzini and an anonymous referee for useful discussions and comments.     

Environmental Risk and Averting Behavior: Predictive Validity of Jointly Estimated Revealed and Stated Behavior Data

We conduct predictive validity tests using revealed and stated behavior data from a panel survey of North Carolina coastal households. The application is to hurricane evacuation behavior. Data was initially collected after Hurricane Bonnie led to hurricane evacuations in North Carolina in 1998. Respondents were asked for their behavioral intentions if a hurricane threatened the North Carolina coast during the 1999 hurricane season. Following Hurricanes Dennis and Floyd in 1999, a follow-up survey was conducted to see if respondents behaved as they intended. A jointly estimated revealed and stated behavior model indicates that the hypothetical and real evacuation behavior is based on the same choice process. Using predictions from this model with a hypothetical bias correction, we find that it predicts actual evacuation behavior with a small forecast error. These results suggest that stated behavior data has some degree of predictive validity.     

The demand functions that satisfy the weak axiom of revealed preference and generalized monotonicity

We prove that the individual demand function satisfying the Weak Axiom of Revealed Preference and the excess demand function satisfying the Wald’s Axiom are pseudomonotone_*⁺, a new class of generalized monotonicity. With this new concept, we refine the characterization of Zhou for the individual demand function. In particular, a full characterization for the excess demand functions satisfying the Wald’s Axiom is derived.     

Time is Money: Improved Valuation of Time and Transportation Costs

The proper valuation of time isimportant for estimating the demand for severaleconomic goods. This paper explores the propervaluation of time when estimating recreationaldemand, where time costs represent asubstantial portion of the ``purchase price'. Toestimate demand, this paper uses a travel costframework to analyze actual behavior (``revealedpreference data') and hypothetical behavior(``stated preference data'), which is induced byhypothetical increases in access fees, traveltime, and travel distance. By comparing theresponses to these three contingencies, theanalysis adjusts and improves the valuation oftime costs. As evidence of this improvement,this analysis demonstrates a great increase inthe consistency between the revealed and stateddata. Similarly, this paper improves thevaluation of transportation-related costs.     

A general revealed preference theorem for stochastic demand behavior

Summary. We present a general revealed preference theorem concerning stochastic choice behavior by consumers. We show that, when the consumer spends her entire wealth, the Weak Axiom of Stochastic Revealed Preference due to Bandyopadhyay, Dasgupta, and Pattanaik (1999) is equivalent to a restriction on stochastic demand behavior that we call stochastic substitutability. We also show that the relationship between the Weak Axiom of Revealed Preference and Samuelson's inequality in the deterministic theory, and the main result of Bandyopadhyay, Dasgupta, and Pattanaik (1999) are both special cases of our result.Received: 10 September 2001, Revised: 4 April 2003, JEL Classification Numbers: D11. Correspondence to: Prasanta K. PattanaikOur greatest debt is to the referee of this paper, who made numerous helpful suggestions. We thank Robin Cubitt, Kunal Sengupta and seminar audiences at Jawaharlal Nehru University, Indian Statistical Institute, University of East Anglia, Universidad Carlos III, University of Essex and University of Montreal for their helpful comments. Prasanta K. Pattanaik acknowledges his intellectual debt to Salvador Barbera, Tapas Majumdar and Amartya Sen.     

The road to rationalisation: A history of “Where the Empirical Lives” (or has lived) in consumer choice theory

This paper examines the different ways that economists have characterised the empirical content of modern consumer choice theory. There has been general agreement among economists that each stage in the development of the theory has been associated with an improvement in the theory's empirical content, and yet there has been no agreement about what exactly the empirical content of consumer choice theory is at any stage in the process. I call this the problem of observational ambiguity. The paper historically documents this problem, links it to various theoretical developments, and relates it to debates in contemporary economic theory.     

Elimination of arbitrage states in asymmetric information models

In a financial economy with asymmetric information and incomplete markets, we study how agents, having no model of how equilibrium prices are determined, may still refine their information by eliminating sequentially “arbitrage state(s)”, namely, the state(s) which would grant the agent an arbitrage, if realizable.      

上市国有商业银行投资者关系研究

基于国有商业银行的模型研究发现，大股东（国家）和中小股东（其他投资者）之间存在约束关系；投资国有商业银行产生的额外收益是吸引其他投资者投资的重要因素，但会导致帕累托无效；减少此额外收益能提高市场效率，并推动国有商业银行市场化。     

A direct test of direct democracy: New England town meetings

Representative democracies govern most locales in the US, making it difficult to compare performance relative to direct democracy. New England states, however, provide an opportunity to test both direct and representative democracy at the local level. This article uses revealed preference axioms to compare spending patterns in New England towns and cities against median voter hypothesis benchmarks. Contrary to previous evidence, we find no differences between direct and representative democracy. The results suggest that horizontal competition arising from local fragmentation minimize differences between direct and representative local government, providing support for wider applicability of median voter-based empirical models of local government behaviour in the US.     

‘Regular’ choice and the weak axiom of stochastic revealed preference

We explore the relation between two ‘rationality conditions’ for stochastic choice behavior: regularity and the weak axiom of stochastic revealed preference (WASRP). We show that WASRP implies regularity, but the converse is not true. We identify a restriction on the domain of the stochastic choice function, which suffices for regularity to imply WASRP. When the universal set of alternatives is finite, this restriction is also necessary for regularity to imply WASRP. Furthermore, we identify necessary and sufficient domain restrictions for regularity to imply WASRP, when the universal set of alternatives is finite and stochastic choice functions are all degenerate. Results in the traditional, deterministic, framework regarding the relation between Chernoff’s condition and the weak axiom of revealed preference follow as special cases. Thus, general conditions are established, under which regularity can substitute for WASRP as the axiomatic foundation for a theory of choice behavior.     

Weak axiomatic demand theory

This paper identifies a class of complete but not necessarily transitive preferences which generate demand functions that obey the weak axiom of revealed preference and within which any function obeying the weak axiom can be rationalized.     

Sen’s criticism of revealed preference theory and its ‘neo-samuelsonian critique’: a methodological and theoretical assessment

This paper evaluates how Amartya Sen’s critique of revealed preference theory (RPT) stands against the latter’s contemporary, ‘neo-Samuelsonian’ version. Neo- Samuelsonians have argued that Sen’s arguments against RPT are innocuous, in particular once it is acknowledged that RPT does not assume away the existence of motivations or other latent psychological or cognitive processes. Sen’s claims that preferences and choices need to be distinguished and that external factors need to be taken into account to analyze the act of choice then appear to be irrelevant. However, while it is true that contemporary revealed preference theory (CRPT) partially evades Sen’s critique, I show that the latter is still relevant outside the restricted areas of consumer choice and market dynamics. In particular, Sen’s views regarding the importance of incomplete preferences and the multiplicity of levels of agency can hardly be integrated into the framework of CRPT. This is a significant limit, given the imperialistic claims of some of the proponents of the latter.     

A model of working time under utility competition in the labor market

The text develops a model of wage and working-time setting by profit-maximizing firms in a competitive labor market with homogeneous workers. Emphasis is placed on the role played by fixed costs of labor and of workers' varying effectiveness in time. Competition among firms implies a constraint on the utility level associated to the labor contract. The model contributes to explain insiders' rationing and other contemporary stylized facts, and lends itself to a particular approach to the problem of evaluating the consequences of mandatory working-time reductions.     

中国房地产价格上涨的影响因素分析

从影响一种商品价格的需求—供给方面;成本问题的土地价格上涨、建造成本上升、开发企业融资的成本提高方面;国家拉动内需等方面分析了影响中国近期房地产价格持续高涨的一些因素。