[JMC] Standard vs random dictator games. The effect of role uncertainty on generosity

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Using a multiple-price list dictator game, this paper provides experimental evidence that the level of generosity is affected when we vary the probability that the dictator’s decision will be implemented. We also show that framing matters for generosity in that subjects are less generous when their choices under role uncertainty are such that subjects perceive that they are in the role of dictators and know that their choices will be implemented with a certain probability, compared with a setting in which subjects are told that they are in the role of recipients and know that their choices will not be implemented with certain probability.

Keywords: dictator games, generosity, role uncertainty, framing effects.

JEL Codes: C91, D3, D6, D81


Ernesto Mesa Vázquez holds a PhD in Industrial Economics (Excellent with a distinction Cum Laude with International Mention) at University of Valencia (2020) under supervision of Prof. Amparo Urbano.

He is a PhD job-market candidate, looking for postdoctoral vacancies or positions in research centres as well as in international organizations around the world, being available from right now.

His lastest participations are: University of Málaga Seminar Series (1 Dec), ESA’s Job-market Candidates’ Seminar (11 Nov), University of Passau – Job interview (6 Nov), National Economic Week – National Federation of Economics Students of Colombia (29 Sep), ESA 2020 Global Online Around-the-Clock Meetings (11 Sep). He is enrolled in different recruitment processes, such as the Interamerican Development Bank (2nd interview: 19 Jan 2021).

He did two short stays along the predoctoral contract: Centre for Game Theory (Stony Brook University; supervisors: Yair Tauman and Sandro Brusco) and Loyola Behavioral Lab (Loyola University; supervisor: Pablo Brañas Garza).

His thesis dissertation is related to behavioral and experimental economics, focusing on the following topics: overconfidence and gender bias, social preferences under uncertainty, and herding behavior in crowdfunding markets.

He holds a MSc Economics and Welfare Evaluation (Pablo de Olavide University), a MSc in Public Statistics and a BSc in Economics (both at University of Seville).

In terms of teaching, recently, he taught a course on Behavioral and Experimental Economics (University of Cauca, 2020). Also, he taught Macroeconomics II in the Bachelor of Economics at University of Valencia (2018).

Previously, he worked as a statistician at the Institute of Statistics and Cartography of Andalusia, and as a research assistant at the University of Seville.


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