Transactive Memory Systems


Review of General Psychology

décembre 2008, vol. 12, n°4, pp.378-394

Départements : Management et Ressources Humaines

The literature on transactive memory (TM) continues to grow in several interrelated scholarly fields. While this increased interest in transactive memory systems has been beneficial, it also let to a plurality and sometimes confusing interpretations of TM theory. In order to identify gaps and ambiguities in TM literature, this article provides a comprehensive overview of TM theory, distinguishes transactive memory systems from related group cognitive concepts, and reviews theory extensions and research in dyads, groups, and teams. Suggested areas for future research and theory extensions are face-to-face communication influencing transactive memory systems, social interaction processes related to expert inferences, task context and levels of analysis, and extension of research to work teams. Keywords: Transactive memory, Transactive memory system

Trust and e-Government Success: An Empirical Study


Journal of Management Information Systems

hiver 2008, vol. 25, n°3, pp.99-131

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

Mots clés : e-government, Intention to continue, IS success model, Public sector, Quality, trust

Electronic government is being increasingly recognized as a means for transforming public governance. Despite this increasing interest, information systems (IS) literature is mostly silent on what really contributes to the success of e-government Web sites. To fill this gap, this study examines the role of trust in e-government success using the updated DeLone and McLean IS success model as the theoretical framework. The model is tested via a survey of 214 Singapore e-government Web site users. The results show that trust in government, but not trust in technology, is positively related to trust in e-government Web sites. Further, trust in e-government Web sites is positively related to information quality, system quality, and service quality. The quality constructs have different effects on "intention to continue" using the Web site and "satisfaction" with the Web site. Post hoc analysis indicates that the nature of usage (active versus passive users) may help us better understand the interrelationships among success variables examined in this study. This result suggests that the DeLone and McLean model can be further extended by examining the nature of IS use. In addition, it is important to consider the role of trust as well as various Web site quality attributes in understanding e-government success

Une participation sélective à l'ordre juridique international


Questions internationales

juillet-août 2008, n°32

Départements : Droit et fiscalité

L'accession de la Chine à l'Organisation mondiale du commerce, sa participation aux missions de maintien de la paix des Nations Unies semblent autant de signes récents d'une volonté chinoise d'intégrer un ordre juridique international longtemps perçu comme impérialiste et menaçant sa souveraineté.Cette évolution s'accompagne d'un profond mouvement de réformes et d'assimilation de normes et pratiques juridiques nouvelles, notamment dans le domaine commercial. Il pourrait favoriser à terme l'émergence d'un État de droit de type nouveau. Cependant, la participation chinoise au droit international reste encore bien sélective, comme en témoigne le peu de cas fait par Pékin de la protection de l'individu et de la garantie de ses droits.

Using stock prices to predict market events: Evidence on sales takeoff and long-term firm survival


Marketing Science

juillet-août 2008, vol. 27, n°4, pp.717-729

Départements : Marketing

The sales takeoff is the critical event in the market history of really new products. Currently, managers have limited ability to anticipate takeoff, and there is tremendous uncertainty at takeoff about which firms will succeed in these promising new markets. This paper evaluates whether stock prices can help to predict the takeoff and the long-term survival of firms at takeoff. I use three different long-horizon event study approaches and a hazard model to address my research questions. I find that abnormal returns are strongly positive in the year prior to takeoff, thus providing an important signal of the takeoff. Moreover, I find that negative abnormal returns in the year of takeoff and one year after takeoff increase the hazard of market exit by 9.5 times relative to firms without these negative abnormal returns. I discuss the implications of these findings for managers and future researchers.

Varieties of social cognition

E. L. UHLMANN, D. Pizarro, P. Bloom

Journal for the Theory of Social Behaviour

septembre 2008, vol. 38, n°3, pp.293-322

Départements : Management et Ressources Humaines

Recent work within psychology demonstrates that unconscious cognition plays a central role in the judgments and actions of individuals. We distinguish between two basic types unconscious social cognition: unconsciousness of the influences on judgments and actions, and unconscious of the mental states (i.e., attitudes and feelings) that give rise to judgments and actions. Influence unconsciousness is corroborated by strong empirical evidence, but unconscious states are difficult to verify. We discuss procedures aimed at providing conclusive evidence of state unconsciousness, and apply them to recent empirical findings.

Vehicle routing with dynamic travel times: a queueing approach

T. van Woensel, L. KERBACHE, H. Peremans, N. Vandaele

European Journal of Operational Research

mai 2008, vol. 186, n°3, pp.990-1007

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

Transportation is an important component of supply chain competitiveness since it plays a major role in the inbound, inter-facility, and outbound logistics. In this context, assigning and scheduling vehicle routes is a crucial management problem. In this paper, a vehicle routing problem with dynamic travel times due to potential traffic congestion is considered. The approach developed introduces mainly the traffic congestion component based on queueing theory. This is an innovative modeling scheme to capture travel times. The queueing approach is compared with other approaches and its potential benefits are described and quantified. Moreover, the optimization of the starting times of a route at the distribution center is evaluated. Finally, the trade-off between solution quality and calculation time is discussed. Numerous test instances are used, both to illustrate the appropriateness of the approach as well as to show that time-independent solutions are often unrealistic within a congested traffic environment, which is usually the case on European road networks. Keywords: TABU SEARCH; EUCLIDEAN PLANE; ALGORITHMS; CAPACITY

What accounts for changes in US fiscal policy transmission?

F. BILBIIE, G. Mueller, A. Meier

Journal of Money, Credit, and Banking

octobre 2008, vol. 40, n°7, pp.1439-1470

Départements : Economie et Sciences de la décision

Using vector autoregressions on U.S. time series for 1957'79 and 1983'2004, we find government spending shocks to have stronger effects on output, consumption, and wages in the earlier period. We try to account for this observation within a DSGE model featuring price rigidities and limited asset market participation. Specifically, we estimate the structural parameters of the model for both periods by matching impulse responses. Model-based counterfactual experiments suggest that most of the changes in fiscal policy transmission are accounted for by increased asset market participation and the more active monetary policy of the Volcker'Greenspan period. asset market participationDSGEE21E62E63fiscal policygovernment spendingminimum distance estimationmonetary policyvector autoregression

When ‘Extraordinary’ Means Illegal: International law and the European Reactions to the United States Rendition Program


Loyola of Los Angeles International and Comparative Law Review

2008, vol. 30, pp.33-76

Départements : Droit et fiscalité, GREGHEC (CNRS)

Who Has Mixed Feelings About Consumption? Self-Monitoring and the Antecedents of Attitude Ambivalence

S. CZELLAR, G. Laurent, E. Cowley

Advances in Consumer Research

2008, vol. 35, pp.860-861

Départements : Marketing

Ambivalent attitudes tend to lead to less predictable consumer judgments and behaviors than non-ambivalent attitudes. It is therefore important that we gain a better understanding of how consumers form ambivalent attitudes toward consumption objects. Our research contributes to the recent introduction of individual differences in the investigation of consumer ambivalence. We show that some antecedents of ambivalence are felt more by consumers with a high (vs. low) level of self-monitoring. Specifically, the discrepancy between personal and other's attitudes causes more ambivalence toward consumption objects for high self-monitors than low self-monitors. Our findings open up interesting directions for research on the formation of attitudinal ambivalence toward products, services and brands.

Why Has CEO Pay Increased So Much?

A. LANDIER, Xavier Gabaix

Quarterly Journal of Economics

février 2008, vol. 123, n°1, pp.49-100

Départements : Finance

This paper develops a simple equilibrium model of CEO pay. CEOs have different talents and are matched to firms in a competitive assignment model. In market equilibrium, a CEO's pay depends on both the size of his firm and the aggregate firm size. The model determines the level of CEO pay across firms and over time, offering a benchmark for calibratable corporate finance. We find a very small dispersion in CEO talent, which nonetheless justifies large pay differences. In recent decades at least, the size of large firms explains many of the patterns in CEO pay, across firms, over time, and between countries. In particular, in the baseline specification of the model's parameters, the sixfold increase of U.S. CEO pay between 1980 and 2003 can be fully attributed to the sixfold increase in market capitalization of large companies during that period