More pessimism than greediness: a characterization of monotone risk aversion in the rank-dependent expected utility model

Summary. This paper studies monotone risk aversion, the aversion to monotone, mean-preserving increase in risk (Quiggin [21]), in the Rank Dependent Expected Utility (RDEU) model. This model replaces expected utility by another functional, characterized by two functions, a utility function u in conjunction with a probability-perception function f. Monotone mean-preserving increases in risk are closely related to the notion of comparative dispersion introduced by Bickel and Lehmann [3,4] in Non-parametric Statistics. We present a characterization of the pairs (u,f) of monotone risk averse decision makers, based on an index of greediness G _u of the utility function u and an index of pessimism P _f of the probability perception function f: the decision maker is monotone risk averse if and only if . The index of greediness (non-concavity) of u is the supremum of taken over . The index of pessimism of f is the infimum of taken over 0 < v < 1. Thus, , with G _u = 1 iff u is concave. If then , i.e., f is majorized by the identity function. Since P _f = 1 for Expected Utility maximizers, forces u to be concave in this case; thus, the characterization of risk aversion as is a direct generalization from EU to RDEU. A novel element is that concavity of u is not necessary. In fact, u must be concave only if P _f = 1.Received: 10 April 2001, Revised: 18 November 2003, JEL Classification Numbers: D81. Correspondence to: Michéle CohenAlain Chateauneuf, Michéle Cohen, Isaac Meilijson: We are most grateful to Mark Machina, Peter Wakker and two anonymous referees for very helpful suggestions and comments.     

Guilty by Association: The Perils of Celebrity Endorsement for Endorsed Brands and their Direct Competitors

The objective of the research presented in this article is to examine the possibility that the adverse effects on consumer brand attitudes engendered by the involvement of a celebrity endorser in a negative event may spill over brands of the same product category (i.e., competitors). The results of an experimental study with 165 adult consumers showed that a scandal involving an athlete endorser had a negative impact not only on the attitude toward the endorsed brand, but also on the attitude toward competitor brands. This suggests that brands strongly associated with one sport may be vulnerable in the context of a scandal falling upon a celebrity athlete endorsing one of their direct competitors.     

Consuming in one's mind: An exploration

Consumer research generally focuses on the consumption of tangible objects and experiences, which are concrete. However, consumers often consume in their minds by fantasizing, dreaming, or imagining that they possess some desired object or that they are living some experience. In this article, the term consumption dreams is used to refer to mental representations of consumption objects that consumers desire and experiences that they want to realize. These are distinguished from uncontrolled mental activities that occur when asleep. The results of two exploratory studies that examined consumption dreams are presented. In the first study, five adult consumers were asked about their most important consumption dream, as well as the factors that influenced this dream and the behaviors that ensued. The second study consisted of a survey of 195 adult consumers where the determinants and consequences of consumption dreaming were probed. It was found that indulging in consumption dreaming is a common activity among most consumers and that consumption dreams and their characteristics depend on general as well as dream‐based variables. In addition, those dreams were found to impact on several consumer behaviors. A causal model involving a subset of the variables examined in this exploratory research was put forward and tested with the survey data. The results showed the value of a proposed conceptual framework to generate theoretical propositions about consumption dreaming. © 2005 Wiley Periodicals, Inc.     

Household Behavior with Imperfect Labor Markets

A household model with differential asset endowments and idiosyncratic transactions costs in accessing labor markets is developed to (1) explain membership of farm households to alternative labor regimes (sellers, employers, or self-sufficient in labor), (2) test for recursivity between production and consumption decisions selectively by labor regime, and (3) identify the determinants of differential labor productivity across labor regimes. The model is applied to a 1994 household survey of the Mexican land reform sector.     

Frequency of observation and the estimation of integrated volatility in deep and liquid financial markets

Using two newly available ultrahigh-frequency datasets, we investigate empirically how frequently one can sample certain foreign exchange and U.S. Treasury security returns without contaminating estimates of their integrated volatility with market microstructure noise. Using the standard realized volatility estimator, we find that one can sample dollar/euro returns as frequently as once every 15 to 20 s without contaminating estimates of integrated volatility; 10-year Treasury note returns may be sampled as frequently as once every 2 to 3 min on days without U.S. macroeconomic announcements, and as frequently as once every 40 s on announcement days. Using a simple realized kernel estimator, this sampling frequency can be increased to once every 2 to 5 s for dollar/euro returns and to about once every 30 to 40 s for T-note returns. These sampling frequencies, especially in the case of dollar/euro returns, are much higher than those that are generally recommended in the empirical literature on realized volatility in equity markets. The higher sampling frequencies for dollar/euro and T-note returns likely reflect the superior depth and liquidity of these markets.     

Proposals for a Minimum Programme for Statistics in Developing Countries

Statistical offices in developing countries are confronted with the challenge of introducing, with limited means, methods and tools ensuring the production of durable statistics satisfying regional, national and international requirements. Taking into account the evolution, over the last years, in the attitude of national authorities, funding partners and statisticians themselves regarding the building up of relevant and durable statistics, the present paper's proposal is to have, in each developing country, a Minimum Programme for Statistics (MPS) and that this programme be centred on four domains: coordination, national accounts, economic and social short term analysis, and dissemination.     

Measurement and its Uses: Harmonization and Quality in Social Statistics

The European construction has induced a strong demand of harmonization of statistics of the various countries. The latter can be focused on an harmonization of outputs , already practised for a long time by national accountants: the statistical variables are defined in common, then each country measures them according to its own means. On the other hand, the harmonization of inputs, more ambitious, seeks a standardization of all the construction process and data collection. This leads to distinguish clearly the two moments of use and of production of economic and social statistics. Now the same distinction is made in the debates over the notion of quality of statistics, which contrast the quality of the product with the one of the process. This quality cannot be judged independently from the expected uses of these statistics and of their form of social credibility. From this point of view, the various harmonization levels are compared with the various forms of connection and convertibility between the national currencies.     

Understanding 'individualization' in human resource management: the case of 'skill-based pay' in France

'Individualization' in personnel practices has long been considered as an essential component of 'modern' human resources management, but the empirical complexities of its definition, implementation and impact within firms have not been analysed in considerable depth. This paper adds to this analysis by reporting on research into one form of individualization - 'skill-based pay' - adopted in different sectors in France. The crucial institutional context for this adoption is explained and then it is shown how different models of skill-based remuneration have emerged as a result of both sectorial contingencies and specific industrial relations processes.     

The kinetic quality of store design: An Exploration of its influence on shopping experience

Kinetic quality of store space is the appreciation of the store with regard to the movements and gestures that can be performed during the shopping trip. Few researches have studied this concept despite its potential influence on shopping outcomes. In this paper, we show that the kinetic quality of the store has an impact on hedonic and utilitarian shopping values and on purchase. The impact on shopping value is similar in magnitude to that of atmospheric quality. Music and visual esthetics positively influence kinetic quality.