anticipating regret why fewer options may be better we study preferences over menus which can be represented as if the agent selects an alternative from a menu and experiences regret if her choice is ex post inferior since regret arises from comparisons between the alternative selected and the other available alternatives our axioms reflect the agent s desire to limit her options we prove that our representation is essentially unique we also introduce two measures of comparative regret attitudes and relate them to our representation finally we explore the formal connection between the present work and the literature on temptation

choice proliferation simplicity seeking and asset allocation abstract in settings such as investing for retirement or choosing a drug plan individuals typically face a large number of options in this paper we analyze how the size of the choice set influences which alternative is selected we present both laboratory experiments and field data that suggest larger choice sets induce a stronger preference for simple easy to understand options the first experiment demonstrates that in seeming violation of the weak axiom of revealed preference subjects are more likely to select a given sure bet over non degenerate gambles when choosing from a set of 11 options than when choosing from a subset of 3 the second experiment clarifies that large choice sets induce a preference for simpler rather than less risky options lastly using records of more than 500 000 employees from 638 institutions we demonstrate that the presence of more funds in an individual s 401 k plan is associated with a greater allocation to money market and bond funds at the expense of equity funds

indecisiveness undesirability and overload revealed through rational choice deferral three reasons why decision makers may defer choice are indecisiveness between various feasible options unattractiveness of these options and choice overload this paper provides a choice theoretic explanation for each of these phenomena by means of three deferral permitting models of decision making that are driven by preference incompleteness undesirability and complexity constraints respectively these models feature rational choice deferral in the sense that whenever the individual does not defer he chooses a most preferred feasible option as a result choices are always consistent with the weak axiom of revealed preference the three models suggest novel ways in which observable data can be used to recover preferences as well as their indecisiveness desirability and complexity components or thresholds several examples illustrate the relevance of these models in empirical and theoretical applications

randall and stoll s bound in an inverse demand system abstract this letter extends randall and stoll s and hanemann s results into a complete inverse demand system it provides a theoretically consistent framework for welfare measurement under quantity restrictions and free adjustment of prices in an equilibrium it is found that randall and stoll s and hanemann s results should be modified to fit into the complete inverse demand system since they may give misleading interpretation of empirical studies in some cases

behavioural characterizations of naivete for time inconsistent preferences we propose non parametric definitions of absolute and comparative naivete these definitions leverage ex ante choice of menu to identify predictions of future behaviour and ex post random choices from menus to identify actual behaviour the main advantage of our definitions is their independence from any assumed functional form for the utility function representing behaviour an individual is sophisticated if she is indifferent ex ante between retaining the option to choose from a menu ex post or committing to her actual distribution of choices from that menu she is naive if she prefers the flexibility in the menu reflecting a mistaken belief that she will act more virtuously than she actually will we propose two definitions of comparative naivete and explore the restrictions implied by our definitions for several prominent models of time inconsistency

temptation driven preferences my own behaviour baffles me for i find myself not doing what i really want to do but doing what i really loathe saint paulwhat behaviour can be explained using the hypothesis that the agent faces temptation but is otherwise a standard rational agent in earlier work gul and pesendorfer 2001 use a set betweenness axiom to restrict the set of preferences considered by dekel lipman and rustichini 2001 to those explainable via temptation we argue that set betweenness rules out plausible and interesting forms of temptation including some which may be important in applications we propose a pair of alternative axioms called dfc desire for commitment and aic approximate improvements are chosen dfc characterizes temptation as situations in which given any set of alternatives the agent prefers committing herself to some particular item from the set rather than leaving herself the flexibility of choosing later aic is based on the idea that if adding an option to a menu improves the menu it is because that option is chosen under some circumstances from this interpretation the axiom concludes that if an improvement is worse as a commitment than some commitment from the menu then the best commitment from the improved menu is strictly preferred to facing that menu we show that these axioms characterize a natural generalization of the gul pesendorfer representation copyright wiley blackwell

modelling the effect of chronic wasting disease on recreational hunting site choice preferences and choice set formation over time chronic wasting disease cwd is a prion disease that affects deer elk and other cervid wildlife species although there is no known link between the consumption of cwd affected meat and human health hunters are advised to have animals from cwd affected areas tested and are advised against consuming meat from cwd infected animals government of alberta 2010 we model hunter response to the knowledge that deer in a wildlife management unit have been found to have cwd in alberta canada we examine hunter site choice over two hunting seasons using revealed and stated preference data in models that incorporate preferences choice set formation and scale we compare a fully endogenous choice set model using the independent availability logit model swait in probabilistic choice set formation in transportation demand models dissertation mit 1984 with the availability function approach cascetta and papola in transp res c 9 4 249 263 2001 that approximates choice set formation we find that cwd incidence affects choice set formation and preferences and that ignoring choice set formation would result in biased estimates of impact and welfare measures this study contributes to the broader recreation demand literature by incorporating choice set formation scale and temporal impacts into a random utility model of recreation demand

probabilistic dominance and status quo bias abstract decision makers have a strong tendency to retain the current state of affairs this well documented phenomenon is termed status quo bias we present the probabilistic dominance approach to status quo bias an alternative is considered acceptable to replace the status quo only if the chances of a subjectively severe loss relative to the status quo are not too high probabilistic dominance is applied and behaviorally characterized in a choice model that allows for a range of status quo biases general enough to accommodate unanimity but also standard expected utility maximization we present a comparative notion of revealing more bias towards the status quo and study its implications to the probabilistic dominance model of choice lastly the model is applied to the endowment effect phenomenon and to a problem of international portfolio choice when investors are home biased

random regret minimization exploration of a new choice model for environmental and resource economics this paper introduces the discrete choice model paradigm of random regret minimization rrm to the field of environmental and resource economics the rrm approach has been very recently developed in the context of travel demand modelling and presents a tractable regret based alternative to the dominant choice modelling paradigm based on random utility maximization theory rum theory we highlight how rrm based models provide closed form logit type formulations for choice probabilities that allow for capturing semi compensatory behaviour and choice set composition effects while being equally parsimonious as their utilitarian counterparts using data from a stated choice experiment aimed at identifying valuations of characteristics of nature parks we compare rrm based models and rum based models in terms of parameter estimates goodness of fit elasticities and consequential policy implications

commitment and self control abstract the literature on self control problems has typically concentrated on immediate temptations this paper studies a gul and pesendorfer temptation and self control econometrica 69 2001 1403 1435 self control and the theory of consumption econometrica 72 2004 119 158 style model in which decision makers are affected by temptations that lie in the future while temptation is commonly understood to give rise to a demand for commitment it is shown that temptation by future consumption can induce its absence the model also exhibits procrastination provides an alternative to projection bias as an explanation for some experimental results and can simultaneously account for myopic and hyperopic behavior the evidence on preference reversals supports temptation by future consumption and suggests that it may not be restricted to short time horizons

duopolistic competition with choice overloaded consumers a large body of experimental work has suggested the existence of a choice overload effect in consumer decision making faced with large menus of choice options decision makers often defer or avoid choice a suggested reason for the occurrence of this effect is that the agents attempt to avoid the cognitive effort that is associated with choosing from larger menus building on this explanation we propose and analyse a model of duopolistic competition where firms compete in menu design in the presence of a consumer population with heterogeneous preferences and overload menu size thresholds the firms strategic trade off is between offering a large menu in order to match the preferences of as many consumers as possible and offering a small menu in order to avoid losing choice overloaded consumers to their rival assuming uniformly distributed preferences we focus on symmetric pure strategy equilibria under various assumptions on the overload distribution and product markups we also propose and analyse a measure of consumer welfare that applies to this environment among other things we provide conditions for maximum and minimum variety equilibria to be possible whereby both firms either offer the entire set of available products or the same one product respectively

regret theory a bold alternative to the alternatives in their famous 1982 paper in this journal loomes and sugden introduced regret theory now more than 30 years later the case for the historical importance of this contribution can be made

product variety and endogenous pricing with evaluation costs one important decision firms must make is to select the product line characteristics and number of products to offer consumers this paper explores the effect of the interaction between consumer evaluation costs and pricing on the optimal product line length to offer consumers before deciding to buy a product among all products offered a consumer learns the product line length given the product line length a consumer decides whether to evaluate the products available and their prices this decision to evaluate depends on the expected consumer surplus after the evaluation being greater than the evaluation costs when the firm offers few products the firm may not attract many consumers because of lack of product fit and may be forced to offer low prices when the firm offers many products all consumers will find a great product fit that is the variance of consumer valuations per product chosen is lower this allows the firm to charge high prices to extract ex post consumer surplus resulting in lower ex ante expected consumer surplus which may lead consumers not to evaluate the products in the first place that is by offering fewer products a firm can commit not to extract all possible consumer surplus these two forces may then lead to the existence of an interior optimal number of products to offer the optimal number of products offered is decreasing in the evaluation costs

decision processes agency problems and information an economic analysis of capital budgeting procedures corporations use a variety of processes to allocate capital this article studies the benefits and costs of several common budget procedures from the perspective of a model with agency and information problems processes that delegate aspects of the decision to the agent result in too many projects being approved while processes in which the principal retains the right to reject projects cause the agent to strategically distort his information about project quality we show how the choice of a decision process depends on these two costs and specifically on severity of the agency problem quality of information and project risk capital budgeting would be easy in a world without agency and information problems the decision maker would simply calculate a project s irr and compare it to the cost of capital but in the real world those providing the funds for investment must rely on self interested agents to identify projects and provide information on expected returns as a result the quality of capital allocation depends on how effective the decision process is in attenuating agency problems and bringing forth accurate information corporations employ a variety of decision procedures in practice some decisions are fully delegated to division and plant managers typically expansion of an existing plant some decisions require approval of headquarters typically construction of a new plant and other decisions require approval conditional on the nature of the proposal such as when projects requiring more than 1 million go to headquarters while smaller projects can be approved locally 1

subjective random discounting and intertemporal choice this chapter provides an axiomatic foundation for a particular type of preference shock model called the random discounting representation where a decision maker believes that her discount factors change randomly over time for this purpose we formulate an infinite horizon extension of dekel lipman and rustichini econometrica 69 891 934 2001 and identify the behavior that reduces all subjective uncertainties to those about future discount factors we also show uniqueness of subjective belief about discount factors moreover a behavioral comparison about preference for flexibility characterizes the condition that one s subjective belief second order stochastically dominates the other finally the resulting model is applied to a consumption savings problem

overconfidence in political behavior this paper studies theoretically and empirically the role of overconfidence in political behavior our model of overconfidence in beliefs predicts that overconfidence leads to ideological extremeness increased voter turnout and stronger partisan identification the model also makes nuanced predictions about the patterns of ideology in society these predictions are tested using unique data that measure the overconfidence and standard political characteristics of a nationwide sample of over 3 000 adults our numerous predictions find strong support in these data in particular we document that overconfidence is a substantively and statistically important predictor of ideological extremeness voter turnout and partisan identification jel c83 d03 d72 d83

regret based capital asset pricing model abstract this study examines the influence of regret aversion on asset pricing by proposing a regret based capital asset pricing model in which individuals maximize the expected returns from chosen portfolios of assets while minimizing anticipated regrets in equilibrium a closed form pricing formula is derived whereby a risky asset s excess return is proportional to its regret beta that measures the exposure to investors emotions the market as a whole pays investors a positive regret premium as compensation for regret aversion as such this study proposes a conceptual framework to understand the aggregate effects of regret the model indicates that employing a regret related beta can help explain cross sectional returns it also implies that regret aversion is a possible reason for the flat security market line and high equity premium

regret aversion and opportunity dependence this paper provides an axiomatic model of decision making under uncertainty in which the decision maker is driven by anticipated ex post regrets our model allows both regret aversion and likelihood judgement over states to coexist also we characterize two special cases minimax regret with multiple priors that generalizes savage s minimax regret and a smooth model of regret aversion

self control and the theory of consumption to study the behavior of agents who are susceptible to temptation in infinite horizon consumption problems under uncertainty we define and characterize dynamic self control dsc preferences dsc preferences are recursive and separable in economies with dsc agents equilibria exist but may be inefficient in such equilibria steady state consumption is independent of initial endowments and increases in self control increasing the preference for commitment while keeping self control constant increases the equity premium removing nonbinding constraints changes equilibrium allocations and prices debt contracts can be sustained even if the only feasible punishment for default is the termination of the contract

choice inconsistencies among the elderly evidence from plan choice in the medicare part d program we evaluate the choices of elders across their insurance options under the medicare part d prescription drug plan using a unique data set of prescription drug claims matched to information on the characteristics of choice sets we document that elders place much more weight on plan premiums than on expected out of pocket costs value plan financial characteristics beyond any impacts on their own financial expenses or risk and place almost no value on variance reducing aspects of plans partial equilibrium welfare analysis implies that welfare would have been 27 higher if patients had all chosen rationally

when more alternatives lead to less choice this paper shows that when the alternatives offered to consumers span the preference space as it would be chosen by a firm search or evaluation costs may lead consumers not to search and not to choose if too many or too few alternatives are offered if too many alternatives are offered then the consumer may have to engage in many searches or evaluations to find a satisfactory fit this may be too costly and result in the consumer avoiding making a choice altogether if too few alternatives are offered then the consumer may not search or choose fearing that an acceptable choice is unlikely these two forces result in the existence of a finite optimal number of alternatives that maximizes the probability of choice

a definition of uncertainty aversion a definition of uncertainty or ambiguity aversion is proposed it is argued that the definition is well suited to modelling within the savage as opposed to anscombe and aumann domain of acts the defined property of uncertainty aversion has intuitive empirical content behaves well in specific models of preference multiple priors and choquet expected utility and is tractable tractability is established through use of a novel notion of differentiability for utility functions called eventwise differentiability

ambiguity made precise a comparative foundation the theory of subjective expected utility has been recently extended to allow ambiguity to matter for choice we propose a notion of absolute ambiguity aversion by building on a notion of comparative ambiguity aversion we characterize it for a preference model which encompasses some of the most popular models in the literature we next build on these ideas to provide a definition of unambiguous act and event and show the characterization of the latter as an illustration we consider the classical ellsberg 3 color urn problem and find that the notions developed in the paper provide intuitive answers journal of economic literature classification number d81