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Socios vs. extranos: identificación de la pertenencia al grupo en la contribución a los bienes públicos

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  • Alexandra Cortés Aguilar
  • Luis Alejandro Palacio García
  • Daniel Felipe Parra Carreño

Abstract

Este artículo estudia el efecto de la experiencia, la estrategia intertemporal y el tamano del grupo como posibles explicaciones a los mayores niveles de contribución al equilibrio en un juego de bienes públicos. En conjunto estas variables permiten capturar el efecto de la pertenencia al grupo, entendido este como el hecho de que a mayor información sobre el comportamiento de los integrantes de él se tenga, mayores serán los niveles de contribución. Para esto se implementó un tratamiento en el que los sujetos interactúan en un grupo con integrantes fijos (socios), y otro en el que el grupo cambia de forma aleatoria en cada ronda (extranos). Adicionalmente, se realizaron los tratamientos cruzados, donde la condición de socios o extranos en una primera etapa se cambia sorpresivamente en una segunda etapa del experimento. Para analizar el efecto del tamano del grupo se consideraron grupos de cuatro y cinco integrantes. Los resultados muestran que la contribución promedio es positiva y converge gradualmente al equilibrio de Nash a medida que aumentan las repeticiones. Aunque existe evidencia a favor de la estrategia intertemporal, esta depende críticamente de la estabilidad en la composición del grupo. Con respecto al tamano del grupo, la contribución promedio es más alta en los grupos con cuatro integrantes.

Suggested Citation

  • Alexandra Cortés Aguilar & Luis Alejandro Palacio García & Daniel Felipe Parra Carreño, 2014. "Socios vs. extranos: identificación de la pertenencia al grupo en la contribución a los bienes públicos," Revista Ecos de Economía, Universidad EAFIT, June.
    • Handle: RePEc:col:000442:012032
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    More about this item

    Keywords

    Juego de bienes públicos; contribución; free-rider; aprendizaje;
    All these keywords.

    JEL classification:

    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior
    • H41 - Public Economics - - Publicly Provided Goods - - - Public Goods

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