Contribuer volontairement au bien public en groupe élargi : évolution via le triptyque observation, explication, représentation sur fond d'un classique

Abstract : We capture decision-making to voluntarily contribute to public good in small and large group, based on a Classic in experimental economics. Contrary to forecasts, decision-making is negatively correlated with Marginal Per Capita Return to investing in the public group in large group. Subjects appear to view the issue as weak. Decision-making is positively correlated, but too weakly, with number of subjects in small group and is not correlated in large group. Decision-making is always negatively correlated with game process, but without convergence to the dominant strategy. The method used in calculating compensation can have an impact. Reciprocity and aversion to inequity are always missing. This can be linked to the fact that subjects are not representative of the true population. In line with forecasts, two properties of public investment emerge and are consistent with decision-making of everyday life. Decision-making is negatively correlated with Marginal per Capita Return in small group, following logic of this incentive to contribute. There are signs of altruism in small group disappearing in larger group, disadvantaged by dilution of Giving. Presence of Warm-Glow Giving increases in large group, supported by changing nature of Giving. We model these results using the Logit equilibrium. It is noisy response functions including different components. Function’s properties properly meet decision-making and have advantage of not modeling some empirical contradictions.
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Damien Chambre. Contribuer volontairement au bien public en groupe élargi : évolution via le triptyque observation, explication, représentation sur fond d'un classique. Economies et finances. Université Panthéon-Sorbonne - Paris I, 2016. Français. ⟨NNT : 2016PA01E018⟩. ⟨tel-01829535⟩

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