Groupe de travail "Economie Comportementale"

  Organisation : Johanna Etner et Meglena Jeleva
Thursday 28 February 2019 (G614)
Wanda Mimra (IESEG)
A Franc Less for a Pound More: (Price) Discrimination and the Value of Privacy

Price discrimination based on consumers' personal data has become common practice in many markets. We analyze the willingness to share personal data when this data is used for pricing in subsequent markets. In a laboratory experiment, participants can sell a bundle of personal data. Participants are categorized based on the content of their personal data and receive category-dependent payoffs in a subsequent stage. The experimental variations change category-dependent the payoff structure. We find no effect of subsequent price discrimination on the general willingness to sell personal data. A significant change in the price of personal data is only observed under strong negative price discrimination. Furthermore, we find important gender differences in data selling price adjustments and the role of underlying privacy concerns.


Thursday 14 February 2019
Nina Zerra (Fondation Médéric Alzheimer)
Raising LTC risk awareness and its financial planning : a randomized controlled experiment
Thursday 31 January 2019 (11h00, salle G614)
Antoine Nebout (ALISS UR1303, INRA, University Paris-Saclay)
Hunger Games II: Does Hunger Affect Risk Preferences?

co-écrit avec Lydia Ashton (University of Wisconsin-Madison. Wisconsin Institute for Discovery) et Emmanuel Kemel (HEC Business School Paris & GREGHEC, CNRS)

Classic economic theory focuses on static and stable preferences. However, there is growing evidence that cognitive, emotional and visceral states (e.g. stress, hunger) can mediate behavioral biases and shape preferences (DellaVigna, 2009). In particular, Symmonds & al. (2010) and Levy & al. (2013) provide evidence that risk attitudes fluctuate with metabolic states. In this paper, we follow this stream of research and propose an experimental design with a specific hunger manipulation mechanism and an original risk attitude elicitation tool that allows parametric estimation of the components of Prospect Theory (PT) by using a convex budget line (CBL) allocation methodology (Choi & al., 2007).

Participants (N=107, Xlab Berkeley) were required to fast for at least three hours before the experiment and completed a high-protein shake tasting activity before/after (randomly assigned) the risk attitude elicitation questionnaire. Our results suggest a limited impact of hunger on the utility function and loss aversion parameters. However, we find that hungry (fasting) participants display significantly more risk aversion (curvature of the utility function) and probability distortion (inverse S shape of the probability weighting function) than the satiated participants. These results are consistent with and extend the existing empirical evidence on satiation and risk attitudes and feed the debate on the impact of hunger on economic decision

Thursday 17 January 2019 (salle 107)
Giuseppe Attanasi (GREDEG, Université de Nice)
Disclosure of Belief-Dependent Preferences in a Trust Game

co-écrit avec Pierpaolo Battigalli (Bocconi University and IGIER, Milan) & Rosemarie Nagel (ICREA, Universitat Pompeu Fabra, Barcelona GSE)

Thursday 29 November 2018 (G614-A)
Romeo Fontaine (INED)
Aide informelle et demande d'assurance dépendance
Thursday 15 November 2018 (G614)
Lisette Ibanez (LAMETA, INRA)
What did you do before? Moral (in)consistency in pro-environmental choice
Thursday 08 November 2018 (10h - 12h15, G614)
Marie Pierre Dargnies (Université Paris Dauphine) | Léontine Goldzahl (Edhec Business School)
Speed and information in financial trading: Experimental design | Health Insurance decision: a theoretical and experimental investigation

- de 10h00 à 11h00

Marie Pierre Dargnies (Université Paris Dauphine) présentera un protocole expérimental sur le thème :

"Speed and information in financial trading: Experimental design"

- de 11h00 à 12h15

Léontine Goldzahl (Edhec Business School) présentera un article intitule:

"Health Insurance decision: a theoretical and experimental investigation"

avec David Crainich (CNRS, IESEF School of Management), , Florence Jusot (Université Paris Dauphine, PSL), Doriane Mignon (Université Paris Dauphine, PSL)

Thursday 18 October 2018 (G614)
Béatrice Boulu-Reshef (CES, Université Paris 1)
Signaling Trustworthiness with Impact Investments: An Experimental Study

Béatrice Boulu-Reshef, Graciela Kuechle, Luise Rohland

Entrepreneurs may differentiate their ventures and attract investments by advertising that their firm produces positive externalities for society. Such signaling of entrepreneurs’ trustworthiness may be a prevalent practice in these investment opportunities which are casually referred to as “impact investment’’ by practitioners. This paper investigates this possible signaling by studying the interplay of altruistic, fiscal, and reputational motives that characterizes these investments in a laboratory experiment. In the experiment, the investor may transfer money to the entrepreneur, who may then invest some, all or none of this money onto a conventional investment opportunity or an impact investment opportunity involving a spillover, and then decide whether or not to transfer some of the funds back. Entrepreneurs choose a type of investment and their choice is visible to the investors. The results are that the choice alone of an impact project does not increase investors’ transfers to impact investments but a higher spillover does as long as the tax from possible gains is not too high. Pro-social entrepreneurs do not announce higher rates of spillovers. In the presence of tax, entrepreneurs internalize that a too high spillover could scare away investors. The experiment shows that the presence of impact investments helps investors coordinate onto different investment types. It identifies the mechanisms behind investors believing that socially-oriented entrepreneurs will be more trustworthy. Specifically, as investors’ transfers react to the effective societal impact and not to the mere project type, making that quantitative information visible allows investors to differentiate between investment opportunities.

Thursday 04 October 2018 (G614)
Carole Treibich (GAEL, Université Grenoble Alpes)
Risk preferences and HIV/AIDS: Evidence from Senegalese female sex workers

We investigate the role of preferences for risk on health and sexual behaviours of 805 female sex workers in Senegal, of whom 441 were surveyed twice at a two-year interval. Risk preferences were measured using simple incentivised risk elicitation tasks as well as domain specific risk-taking scales. We find that the experimental measure was poorly correlated with self-reported measures. We further find that risk preferences were highly stable across domains and fairly stable over time. Our main result indicates that risk preferences measured in the lab are a main predictor of sex workers' health and behaviours. We find that risk averse sex workers demand more preventive services and are less likely to engage in risky sex and, as a result, are less likely to be infected with sexually transmitted infections, including HIV/AIDS. Hence, our results conrm the role of risk preferences in the spread of HIV/AIDS epidemic.

Thursday 14 June 2018 (11h30)
Vincent de Gardelle (CES, CNRS, Université Paris 1)
Confidence as a common currency for learning
Thursday 31 May 2018
Bertrand Chopard (LIRAES, Université Paris Descartes)
Public enforcement of law and ambiguity
Thursday 24 May 2018 (à 11h)
Jonathan Sicsic (Université Paris-Descartes)
Choice certainty and deliberative thinking in discrete choice experiments. A theoretical and empirical investigation

En collaboration avec D.A. Regier et V. Watson

Thursday 19 April 2018
Justine Jouxtel (PSE, Paris 1)
Voluntary Contribution of Time: time-based incentives in a VCM experiment
Thursday 05 April 2018
Patricia Crifo (EconomiX)
Wages and CSR: entrenchment or ethics?

Co-écrit avec MA Diaye et S. Pekovic

Thursday 08 March 2018
Frédéric Isel (MoDyCo, Université Paris Nanterre)
L'apport de la neuroimagerie dans l'étude du processus de prise de décision en situation d'incertitude
Thursday 01 February 2018
Pascale Bazoche (SMART-LERECO, INRA) et Sylvaine Poret (ALISS, INRA)
What do trout eat : acceptance of insects in animal feed
Thursday 18 January 2018
Jean-François Verlhiac (LAPPS, UFR SPSE, Université Paris Nanterre)
Do we really have to be afraid of a threat in order to act? The mediating role of fear in the persuasive effect of the vividness and framing of a message on personal motivation and the effectiveness of a diabetes screening program
Thursday 07 December 2017 (11h00)
Elias Bouacida (doctorant à PSE, ATER à Université Paris Nanterre)
Pay-for-Certainty, a Methodology and an Experiment to Assess Indifference and Incompleteness
Thursday 23 November 2017 (10h00)
Edouard Civel
Perception et Fiabilité des Labels verts
Thursday 09 November 2017 (11h00 en salle 614)
Kate Farrow (EconomiX)
Designing more effective norm interventions: The role of valence.
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