Articles

"L' Ile de la Tentation" ... de la violation de l'article L 120-2 du Code du travail

M. SERNA

Blog Dalloz

28 février 2008

Départements : Droit et fiscalité


Le 12 février dernier, la cour d'appel de Paris a rendu trois décisions dans un litige concernant trois participants à une émission de téléréalité, « L'Ile de la Tentation : saison 2003 », produite par la SAS GLEM et diffusée sur TF1. Elles réforment le jugement rendu par le conseil de prud'hommes de Paris, le 30 novembre 2005, et permettent d'appréhender la difficulté à qualifier juridiquement la télévision du réel, et surtout, de souligner la pénibilité du travail au sein de la télé-réalité.

A New Approach to Comparing VaR Estimation Methods

C. PERIGNON, D. Smith

Journal of Derivatives

hiver 2008, vol. 16, n°2, pp.54-66

Départements : Finance, GREGHEC (CNRS)

Mots clés : Value-at-Risk, Bank Trading Revenue, Backtesting, Coverage Test

http://dx.doi.org/10.2139/ssrn.981207


Value-at-risk (VaR), despite its known shortcomings, has become established as the most commonly used measure of risk exposure. But many variants of procedures for implementing VaR exist. Some variants use historical data with or without simulations, while others assume parametric models, such as GARCH, with parameters estimated from past data. And, of course, different users might focus on different VaR cutoffs: 5%, 1%, and so on. Perignon and Smith use an innovative method of extracting daily values for bank revenues from their annual reports to explore which VaR methods empirically work best. A second innovation discussed in the article is how to measure the accuracy of tail estimation at multiple points in the tail. The results suggest that, in estimating VaR for banks, parametric methods work best

A tractable method to measure utility and loss aversion in prospect theory

M. ABDELLAOUI, H. Bleichrodt, O. L'HARIDON

Journal of Risk & Uncertainty

juin 2008, vol. 36, n°3, pp.245-266

Départements : Economie et Sciences de la décision, GREGHEC (CNRS)


This paper provides an efficient method to measure utility under prospect theory. Our method minimizes both the number of elicitations required to measure utility and the cognitive burden for subjects, being based on the elicitation of certainty equivalents for two-outcome prospects. We applied our method in an experiment and were able to replicate the main findings on prospect theory, suggesting that our method measures what it is intended to. Our data confirmed empirically that risk seeking and concave utility can coincide under prospect theory. Utility did not depend on the probability used in the elicitation, which offers support for the validity of prospect theory. Loss aversionProspect theoryUtility measurement

Absorptive Capacity and Source-Recipient Complementarity in Designing New Products: An Empirically Derived Framework

C. Abecassis-Moedas, S. BEN MAHMOUD-JOUINI

Journal of Product Innovation Management

2008, vol. 25, n°5, pp.473-490

Départements : Informations Systems and Operations Management, GREGHEC (CNRS)


Numerous publications are dedicated to absorptive capacity and new product development (NPD). Most are centered on the recipient team, and very few consider the effects of the source team knowledge characteristics on the knowledge absorption and the NPD performance. This paper analyzes the type of the external knowledge sourced from outside the organization and the process through which it is used by the recipient firm and the effect on NPD performance. This is done through a specific type of source team knowledge, the design, and through the NPD process in industries (clothing and construction) where it plays a key role. NPD cases were analyzed and clustered in three categories of design absorption processes. From these categories, a conceptual framework of the source-recipient knowledge complementarity and its impact on the NPD performance is proposed. The main result is that the complementarity between the recipient and the source knowledge is a critical aspect of the absorption process and therefore of the NPD performance. From a managerial perspective, this research highlights the role of design in the NPD process and how the combination of design knowledge with prior knowledge (marketing or technological) is related to NPD performance.

Acción, decisión y competencias deliberativas en el Presupuesto Participativo de Porto Alegre

L. E. CUENCA BOTEY

Revista de Ciencias Sociales

2008, vol. 3, n°121, pp.133-148

Départements : GREGHEC (CNRS)


Acquisition of Information in Financial Markets

C. CHAMLEY

Review of Economic Studies

octobre 2008, vol. 75, n°4

Départements : Finance


In their paper "Information Acquisition in Financial Markets" (this journal, ), Barlevy and Veronesi present a model of a one-period financial market, and claim that for an open set of parameter values, the value of information increases with the mass of informed agents. That claim is shown here to be false. The property of strategic substitution is robust in their model.

An Allais Paradox for Generalized Expected Utility Theories?

L. Placido, O. L'HARIDON

Economics Bulletin

2008, vol. 4, n°19, pp.1-6

Départements : GREGHEC (CNRS)


An Experimental Test of Brand Insulation Against Competitor Attacks: Effects of Consumer Heterogeneity and Residual Desire

D. DelVecchio, T. B. HEATH

Psychology and Marketing

octobre 2008, vol. 25, pp.944-960

Départements : Marketing


An Interpretive Examination of the Development of Cultural Sensitivity in International Business

J. Shapiro, J. Ozanne, B. SAATCIOGLU

Journal of International Business Studies

janvier 2008, vol. 39, n°1, pp.71-87

Départements : Marketing


pas sous affiliation hecAbstract: Cultural sensitivity is assumed to be important in international business, yet little empirical work explores how cultural sensitivity actually develops. In-depth interviews with buyers from the Asian Pacific Rim were conducted, and support was found for a four-stage model of cross-cultural sensitivity in which buyers move through the stages of romantic sojourner, foreign worker, skilled worker, and partner. This paper explores the development and evolution of cultural sensitivity as it interacts with trust and development of international business relationships.

Antecedents and the performance outcome of transactive memory in daycare work groups

V. PELTOKORPI, M. Manka

European Psychologist

2008, vol. 13, n°2, pp.103-113

Départements : Management et Ressources Humaines


Laboratory experiments provide evidence that ongoing social interactions support the formation, functioning, and maintenance of transactive memory (TM), which in turn has positive performance implications in dyads and groups. Because most studies have been conducted with students, relatively little is known about TM in work settings. This study examined the mediating role of TM between interpersonal communication, group potency, supportive supervision, and self-reported group performance in 33 daycare work groups. Hierarchical regression analysis showed that TM fully mediated the interpersonal communication and group performance linkage and partially mediated the group potency and group performance linkage. Implications and suggestions for future research are offered. Keywords: Transactive memory, Group performance, Group potency, Interpersonal communication.


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