A bounded rationality model of information search and choice in preference measurement


Journal of Marketing Research

April 2015, vol. 52, n°2, pp.166-183

Departments: Marketing

Keywords: Eye tracking, Preference measurement, Dynamic discrete choice models

It is becoming increasingly easier for researchers and practitioners to collect eye-tracking data during online preference measurement tasks. The authors develop a dynamic discrete choice model of information search and choice under bounded rationality, which they calibrate using a combination of eye-tracking and choice data. Their model extends Gabaix et al.'s (2006) directed cognition model by capturing fatigue, proximity effects, and imperfect memory encoding and by estimating individual-level parameters and partworths within a likelihood-based hierarchical Bayesian framework. The authors show that modeling eye movements as the outcome of forward-looking utility maximization improves out-of-sample predictions, enables researchers and practitioners to use shorter questionnaires, and allows better discrimination between attributes

A desire for deviance: The influence of leader normativeness and inter-group competition on group member support


Journal of Experimental Social Psychology

January 2015, vol. 56, pp.36-49

Departments: Management & Human Resources, GREGHEC (CNRS)

Keywords: Deviance; Leadership; Inter-group competition; Social identity

Group members typically prefer leaders who have characteristics or attitudes that are in line with group norms (i.e., are normative). In this paper, we explore the possibility that in highly competitive inter-group contexts, group members prefer leaders who can more effectively differentiate the in-group from out-groups, leading to a preference for leaders with more extreme attitudes that are in line with group norms (i.e., pro-normative). In three experiments conducted in an election context in the United States, we find that both Democrats' and Republicans' preference for an extreme leader increases under conditions of high inter-group competition. Results indicate that participants' heightened need to differentiate their political party from the competing party drives this effect, and that this effect is stronger for those who identify strongly with their political party. Implications for group members' responses to in-group deviance and leadership support are discussed.

A Note on 'Sourcing Decisions with Stochastic Supplier Reliability and Stochastic Demand'


Production and Operations Management

October 2015, vol. 24, n°10, pp.1636-1639

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

Keywords: Sourcing, Supplier selection, Random yield

This note complements the study of Burke, Carillo, and Vakharia (2009 hereafter “BCV”) which analyzes a class of single-product multisourcing problems under stochastic demand and random yields. The purpose is twofold. First, we prove that the objective function used by these authors is only a lower bound for the expected profit for which we provide the correct expression. Second, we show on some of the numerical instances provided in BCV's study that the structure and the performance of the BCV ordering policy may be substantially different from the optimal ordering policy. We conclude by giving general qualitative insights characterizing suboptimality of the BCV solution

A Sense of the Magical: Names in Lord Dunsany’s The King of Elfland’s Daughter


Names: A Journal of Onomastics

December 2015, vol. 63, n°4, pp.189-199

Departments: Languages & Cultures

Keywords: Lord Dunsany, The King of Elfland's Daughter, Literary onomastics, Fantasy, Magic in literature

Contributing to the enchantment of the author’s celebrated prose, the names in Lord Dunsany’s best-known novel evoke a world of fairytale, myth, and song; ring true to the characters and places they designate; and fashion themselves into a constellation of correspondences in sound, form, and sense.

A world of models: review of Mary S. Morgan, The world in the model: how economists work and think (book review)


Journal of Economic Methodology

2015, vol. 22, n°2, pp.235-240

Departments: Economics & Decision Sciences, GREGHEC (CNRS)