Filter Tests of U.K. Share Prices

The purpose of this paper is to develop and test a model of the promotional expenditure decision for a firm operating under conditions of combined uncertainty and oligopoly. The uncertainty is assumed to exist in respect of the impact of any particular level of promotional expenditure upon the demand conditions facing the firm.

The analysis forms part of a wider study of advertising by confectionery manufacturers and arose largely as a result of conversations with advertising executives in the confectionery market. In the course of these discussions it became clear that the existing body of theory concerning the promotional expenditure decision is almost completely incapable of accommodating the extensive uncertainty which is an integral part of the promotional decision in a market such as that under consideration. It also became clear (at least in the case of the confectionery market) (a) that decision makers regard the pricing and promotional expenditure decisions as being largely independent and (b) that in a large number of cases decision makers think in terms of a minimum or ‘threshold’ level of promotional expenditure. While these factors are predominantly in the nature of impressionistic informal observations and therefore of doubtful validity as bases for a scientific enquiry, it was nonetheless felt worthwhile to attempt to develop a theoretical framework capable of accommodating them.

While exhibiting considerable indeterminacy, the model developed below at least takes explicit cognisance of risk and uncertainty. It is also formulated in such a way that the promotional and pricing decisions are independent. It is rather remarkable and most encouraging that the analysis appears to predict something closely akin to minimum ‘threshold’ levels of advertising expenditure. Our theoretical exercise might therefore be afforded the minimal justification of providing a framework capable of accommodating the various results of introspection and conversational empiricism.     

Decision weights in anticipated utility theory: Response to Segal

The Anticipated Utility model permits the incorporation of decision weights into a model of choice under uncertainty which maintains the desirable properties of transitivity and preservation of dominance. In order to model choice it is necessary to impose appropriate conditions on the decision weighting function. Segal has argued that the function should be concave so that less favorable outcomes are always given more weight than the favorable ones. In this paper it is argued that outlying low probability events, whether favorable or unfavorable, are likely to be ‘overweighted’.     

Real Options Effects on Employment: Does Exchange Rate Uncertainty Matter for Aggregation?

Abstract. In a baseline micro model a band of inaction due to hiring and firing costs is widened by option value effects of exchange rate uncertainty. Based on this micro foundation, an aggregation approach is presented. Under uncertainty, intervals of weak response to exchange rate reversals (called ‘play’ areas) are introduced on the macro level. ‘Spurts’ in new employment or firing may occur after an initially weak response. Since these mechanisms may apply to other ‘investment’ cases where the aggregation of microeconomic real options effects under uncertainty are relevant, they may even be of a more general interest.     

Two separated effects of employer-provided health insurance on job mobility

We estimate the effect of employer-provided health insurance (EPHI) on job mobility via a dynamic model of joint employment and health insurance decision in the presence of uncertainty about wage rate and health status transitions. The model is based on a Markov decision process in which a hedonic wage approach provides an economic rationale for the different choices and health insurance serves as an input to the health production process. Including health transitions in the model helps us to understand how the availability of EPHI (positive job characteristic) and holding EPHI (the wage-health insurance trade-off) enter into the individuals’ decisions. The model is estimated using the 1999–2000 Medical Expenditure Panel Survey panel 4, and the results show that the ‘pure’ effects of holding EPHI are negligible, the ‘full’ effects of EPHI are significant and the degrees of the inefficiency vary between 14% and 25% across different states.     

Precautionary principle as a rule of choice with optimism on windfall gains and pessimism on catastrophic losses

The paper investigates a decision-making process involving both risk and ambiguity. Differently from existing papers [Basili, M., Chateauneuf, A., Fontini, F., 2005. Choices under ambiguity with familiar and unfamiliar outcomes, Theory and Decision 58, 195-207; Chichilnisky, G., 2000. Axiomatic approach to choice under uncertainty with catastrophic risks. Resources and Energy Economics 22, 221-231; Chichilnisky, G., 2002. In: El-Shaarawi, A.,H., Piegorsch, W.W. (Eds.), Catastropic Risks. Encyclopedia of Environmetrics, vol. 1. John Wiley & Sons, Ltd, Chichester, UK, pp. 274-279], we assume that, in a Choquet Expected Utility framework, the decision-maker is pessimistic with respect to unfamiliar (catastrophic) losses, optimistic with respect to unfamiliar (windfall) gains and ambiguity-neutral with respect to the familiar world. A representation of the decision-maker's choice is obtained that mimics the Restricted Bayes-Hurwicz Criterion. In this way a characterization of the Precautionary Principle is introduced for decision-making processes under ambiguity with catastrophic losses and/or windfall gains.     

The Determinants Of The Adoption Of Advanced Manufacturing Technology

The paper investigates empirically the decision of firms to adopt ‘Advanced Manufacturing Technologies’ (AMT) based on a comprehensive specification of a ‘rank model’ of technology adoption using firm-level data for Swiss manufacturing. The explanatory variables include numerous dimensions of (anticipated) benefits from and costs of technology adoption allowing for uncertainty as well as for information and adjustment costs. Moreover, the effect of complementarities between various functional groups of AMT (design, fabrication, communication, etc.) as well as of learning from the use of previous technology vintages within such functional groups is analyzed, Finally, the size-dependence of the adoption decision is studied in detail. The model yields a quite robust pattern of explanation across estimates with different adoption variables (time period of introduction of AMT, intensity of use of AMT, etc.) with plausible differences of the results based on the alternative adoption measures used.     

Projecting from a Fiction: The Case of Denmark and the Financial Crisis

Institutional and ideational crises are characterised by fundamental uncertainty about the world, and at the same time require swift action on part of decision makers. How do political actors overcome uncertainty to enable collective action? The paper argues that actors use the ideas of the pre-crisis regime and through processes of bricolage seek to fit them to radically different circumstances. This enables action, but it also privileges the actors that benefited from these ideas before the crisis. This helps explain why so relatively few changes to financial regulation are appearing from the recent crisis. The argument is illustrated through the case of financial crisis in Denmark, demonstrating that the Danish authorities used ideas developed since the banking crisis of the 1980s concurring on the discourse that the best solution to the crisis would be a further ‘consolidation' of the sector, that is, fewer small banks and stronger large banks. This shows both the strength and weakness of using old ideas for radically new problems: it enables actors to act in concert, but changes are incremental and the weaknesses of the previous regime may thus live on in the new regime.     

The economics of climate change impacts à la Stern: Novel and nuanced or rhetorically restricted?

The Stern report conducts an estimation of Greenhouse Gas control costs weighed against the benefits of avoiding damages at the global scale. As I show, Stern and colleagues are aware of the limits to CBA, although they chose to ignore the considerable literature on the subject, the many contributions by ecological economists, and especially work specific to the enhanced Greenhouse Effect. Various problems are raised or mentioned in the report including: strong uncertainty, incommensurability, plural values, non-utilitarian ethics, rights, distributional inequity, poverty, and treatment of future generations. How then can this report, acknowledging so many of those aspects of climate change that render CBA an unsuitable tool for generating policy recommendations, go ahead to conduct a global CBA and make policy recommendations? I explain how issues are suppressed and sidelined in a careful and methodical manner, with the pretence they have been addressed by ‘state of the art’ solutions. Meanwhile, the authors maintain allegiance to an economic orthodoxy which perpetuates the dominant political myth that traditional economic growth can be both sustained and answer all our problems. Besides perpetuating myths, this diverts attention away from alternative approaches, away from ethical debates over harming the innocent, the poor and future generations, and away from the fundamental changes needed to tackle the very real and serious problems current economic systems pose for environmental systems.     

The uncertain foundations of the welfare state

The welfare state is often portrayed as provider of insurance against ‘uncertainties’, in Knight's (1921) sense of the term, which would be refused or underinsured on private markets. This image conflicts with the standard economic model of risk exchange founded on the subjective interpretation of probability, which predicts that all individual uncertainties will be insured by private markets. Our aim in this paper is to explain why this prediction fails and, building on contributions to decision theory that take seriously the idea of Knightian uncertainty, to show why social insurance may be justified.     

The necessity of imperfect decisions

I construct a general model which neither postulates decisions are always optimal, nor that decision errors necessarily arise when ‘real world’ agents are involved. Nevertheless, I show that agents always have a positive marginal incentive to use some information imperfectly, but never to use all potential information even if they have costless access to perfect information about how to select every action. These results imply that in order for a decision problem to be internally consistent without simply postulating the extreme limit of perfect decisions, it must explicitly incorporate the effects of both information and decision errors on behavior.     

A general proposition on the design of a neutral business tax

A simple and general means of levying a business tax that is ‘neutral’ in the sense that it does not affect the firm's decisions at the margin is discussed. In particular, we analyze the effect of a business tax of our design on the investment decision of the firm. The well-known ‘imputed income’ and ‘immediate write-off’ methods of levying a neutral business tax are found to be special cases of our general tax design. The implication of our results is that a neutral ‘pure profits’ tax can be levied without the informational difficulties of the imputed income method or the cash flow disadvantages of the immediate write-off method.     

The 'Charge of the Right Brigade': Transnational Social Forces and the Neoliberal Configuration of Poland's Transition

Enormous new markets in uncertainty and in carbon have been created recently, ostensibly to enhance the cost-effectiveness of both finance and climate action. In both cases, however, creating the abstract commodity framework necessary to make sense of the notion of ‘cost-effectiveness’ has entailed losing touch with what was supposedly being costed, helping to engender systemic crisis. The new financial markets expanded credit and multiplied leverage by isolating, quantifying, slicing, dicing and circulating diverse types of uncertainty; the resulting unchecked pursuit of liquidity led to a catastrophic drying up of liquidity. The carbon markets, meanwhile, by identifying global warming solutions with reductions in an abstract pool of tradable pollution rights and linking them with ‘offsets’ manufactured through quantitative techniques, ended up blocking prospective historical pathways toward less fossil fuel dependence and thus exacerbated the climate problem. Unsurprisingly, both markets have provoked strong, if diverse and confused, movements of societal self-defence. This pattern of action and reaction constitutes a chapter in the political history of commodification as significant in some ways as that describing the movements to commodify land and labour analysed by Karl Polanyi.     

The impact of price floors on farmland investments: a real options based experimental analysis

Price floors are a common instrument for market intervention to stimulate investments. In some cases, it can be observed that a price floor does not have the stimulating effect. We experimentally analyse the investment behaviour of students who take the role of farmers. The experiment considers an investment problem under uncertainty in a ‘with price floor’ and a ‘no price floor’ treatment, stylizing a decision to take an ongoing farmland investment option. We compare the actual investment behaviour with normative benchmarks of the net present value and the real options approach. Furthermore, we look at order and learning effects. The results show that the price floor has no significant impact on the willingness to invest, whereas the effects of order were statistically significant. The investment reluctance arising from an abolishment is stronger than the investment stimulation arising from the introduction of a price floor. Furthermore, neither the net present value nor the real options approach is appropriate to predict the investment behaviour in general. Nevertheless, the predictions of the real options approach enable an approximation of the participants’ investment behaviour if the individuals have an adequate chance to learn from personal experience.     

UNCERTAINTY AVERSION AND PORTFOLIO INERTIA

In stock markets, we often observe portfolio inertia, i.e., a situation in which some stocks are not traded or not priced for a few minutes or longer. This is neither an exceptional situation in which some stock price soars too high to be priced, nor the one where some stock price plummets too much to be traded. By introducing the concept of ‘Knightian uncertainty’, Dow and Werlang (1992) account for the existence of portfolio inertia, which has not been accounted for under the concept of ‘risk’. This paper provides a characterization of the spread between buying and selling prices based on a parameter proposed by Ozaki and Streufert (1999, 2001) that enables us to estimate the attitude towards Knightian uncertainty, and shows that an increase (a decrease) in Knightian uncertainty expands (shrinks) the interval in which an investor never changes her initial position. Furthermore, we analyse the effect of an increase in Knightian uncertainty on portfolio inertia based on Epsilon‐contaminations.     

Economic emergence: An evolutionary economic perspective

The standard neoclassical approach to economic theorising excludes, by definition, economic emergence and the related phenomenon of entrepreneurship. We explore how the most economic of human behaviours, entrepreneurship, came to be largely excluded from mainstream economic theory. In contrast, we report that evolutionary economists have acknowledged the importance of understanding emergence and we explore the advances that have been made in this regard. We go on to argue that evolutionary economics can make further progress by taking a more ‘naturalistic’ approach to economic evolution. This requires that economic analysis be fully embedded in complex economic system theory and that associated understandings as to how humans react to states of uncertainty be explicitly dealt with. We argue that ‘knowledge,’ because of the existence of uncertainty is, to a large degree ‘conjectural’ and, thus, is closely linked to our emotional states. Our economic behaviour is also influenced by the reality that we, and the systems that we create, are dissipative structures. Thus, we introduce the notions of ‘energy gradients’ and ‘knowledge gradients’ as essential concepts in understanding economic emergence and resultant economic growth.     

Impacts of back to the land policies

A model of rural-urban migration is formulated for some developing economies. The emphasis is on decision making under uncertainty by the rural household. An income effect which is related to some hypotheses concerning behavior of the household towards risk is included along with a conventional price effect in the model. The impact of back to the land policies on the rate of migration in this model differs from the results of some models by Todaro and Harris and several refinements to the Harris-Todaro model as are nicely summed up in an article entitled ‘Internal Migration and Economic Development: An Overview’ by Lucas. The principal result of this analysis lies in its challenge to the conventional wisdom that back to the land policies necessarily dampen rural exodus.     

Did political constraints bind during transition?Evidence from Czech elections, 1990–20021

Many theoretical models of transition are driven by the assumption that economic decision making is subject to political constraints. In this paper we test whether the ‘winners’ and ‘losers’ of economic reform influenced voting behaviour in the first five national elections in the Czech Republic. We propose that voters, taking stock of endowments from the planning era, could predict whether they would become winners or losers of transition. Using survey data we measure the degree to which regions were ‘not afraid’ or ‘afraid’ of economic reform in 1990. We define the former as potential ‘winners’ who should vote for pro‐reform parties and the latter as potential ‘losers’ who should support left‐wing parties. Using election results and economic indicators at the regional level, we demonstrate that there is persistence in support for pro‐reform and communist parties which is driven by prospective voting based on initial conditions in 1990. We find that regional unemployment rates in 2002 are good predictors of voting patterns in 1990 and provide empirical evidence that political constraints bind during transition.     

The Role of Culture and Meaning in Rational Choice

The Wason card selection and the Tversky &; Kahneman frame anomaly are examined in the context of a probabilistic, constructivist biological model of decision-making. Rational choice requires that decision-makers understand the meaning of the choices they confront. In fact, the determination of meaning and the process of rational choice represent two sides the same coin. Further, perception, cognition and action are ill-posed problems. To solve these problems ‘missing data’ must be supplied by the brain. This data is acquired by both ontogenetic and phylogenetic processes. These evolutionary processes facilitate the determination of meaning and as a product of that process also facilitate the construction of rationality. Two interrelated brain systems involved in this construction process are examined: an emotional system that rapidly and non-consciously assigns reward expectancy values to objects in the environment and a sensory-motor system that participates in the discovery of more general information that facilitates environment/body interactions. Jointly, these systems help a naïve agent to find ‘meaning in an unlabeled world’ and to predict the outcomes of future interactions with that world by supplying ‘background’ information, i.e., by supplying the missing data necessary for rational choice. This ‘background’ represents the imprint of the statistical structure of the world on the brain and, as such, embodies the individual’s Bayesian priors. Lack of sufficient background capacities can result in systematic judgment errors and seemingly irrational decisions. Complex culture is a key aspect of the environment that facilitates the construction of rationality, in part, by becoming internalized as background. Culture facilitates the creation of complex social constructs that contribute to cultural evolution, reduce uncertainty, and increase rationality; however, cultural evolution can get ahead of itself—potentially leading to background failure and errors in judgment and choice. Finally, it is not simply complexity or lack of hands-on experience that lead to error: an additional component that might be called semantic opacity is necessary.     

Gazprom and the complexity of the EU gas market: a strategy to define

Abstract

Confronted with an increasingly competitive market in the European Union and the credible threat of a new entrant in the form of liquefied natural gas imports from the United States, Gazprom’s traditional export strategy is open to question. The company must decide whether it should launch a price war in order passively to adapt to impending competition and its role as a ‘residual supplier’ to the EU gas market, or whether it should take advantage of the current price uncertainty. This article explores the scope for long-term strategic action by Gazprom other than simply engaging in a price war. It is argued that Gazprom could forge a position as a key player in the EU gas market capable of playing the same role as Saudi Arabia does in the global oil market.     

Quality Uncertainty as Resolution of the Bertrand Paradox

It is well‐known that product differentiation eliminates the Bertrand paradox (i.e. marginal cost pricing under duopoly). While differentiation is often justified with reference to the consumer's ‘preference for variety’, the conditions under which such a preference is likely to arise are rarely considered. We investigate this question in a setting in which uncertainty about product quality can endogenously generate either convex or non‐convex preferences. We show that even when two goods are ex ante homogeneous, quality uncertainty can eliminate the Bertrand paradox.