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Hechos sobre el partidismo: actualización basada en la evidencia de la confianza en las fuentes partidistas

Giannis Lois¹, Elias Tsakas², Arno Riedl²

¹Department of Psychology, School of Social Sciences, University of Crete.

Journal of experimental psychology. General

|August 21, 2025

Resumen

Inicialmente, los partidarios favorecen la información del grupo, pero con el tiempo aprenden a confiar en fuentes creíbles, superando el sesgo cuando hay información externa disponible. Esto demuestra la dinámica de aprendizaje bayesiano en el procesamiento de información política.

Área de la Ciencia:

Psicología social
Ciencias políticas
Ciencias de la información

Sus antecedentes:

La desinformación política y la polarización de creencias a menudo se atribuyen al razonamiento motivado.
Una visión alternativa sugiere que las personas usan el partidismo como una heurística para la credibilidad de la información.
Comprender estas dinámicas es crucial para hacer frente a la polarización política.

Objetivo del estudio:

Para probar las explicaciones de la competencia para el procesamiento de la información en un entorno político dinámico.
Investigar si los partidarios superan los sesgos iniciales con experiencia y retroalimentación.
Identificar los factores que influyen en el proceso de aprendizaje con respecto a la credibilidad de la fuente.

Principales métodos:

Tres experimentos expusieron a los participantes a mensajes de fuentes partidistas dentro y fuera del grupo.
Se proporcionó información externa para indicar la fiabilidad de la fuente.
Se realizó un seguimiento a lo largo del tiempo de la incorporación de información de diferentes fuentes por parte de los participantes.

Principales resultados:

Los participantes inicialmente mostraron un sesgo partidista, favoreciendo las fuentes de ingrupo, especialmente aquellas con una alta polarización afectiva.
Con la experiencia y la retroalimentación, este sesgo disminuyó, y los participantes aprendieron a priorizar fuentes confiables independientemente del partidismo.
El contenido de la información, el tipo de fuente (partidista o neutral) y los incentivos monetarios no afectaron significativamente el aprendizaje; la incertidumbre sí.

Conclusiones:

Los partidarios demuestran dinámicas de aprendizaje bayesianas, superando los sesgos iniciales con una retroalimentación externa confiable.
La experiencia y los motivos de exactitud permiten a las personas aprender a confiar en fuentes creíbles, independientemente de su afiliación política.
Esto sugiere que los mecanismos que promueven la evaluación precisa de la información pueden mitigar la polarización.

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