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Lo irracional racional: los mejores aprendices muestran un sesgo más fuerte en la frecuencia de las recompensas
Mianzhi Hu1, Darrell A Worthy1
1Department of Psychological and Brain Sciences, Texas A&M University.
Journal of experimental psychology. Learning, memory, and cognition
|January 22, 2026
Resumen
Los mejores aprendices muestran un sesgo de frecuencia más fuerte, lo que sugiere que esta estrategia de toma de decisiones puede ser adaptativa. Este sesgo surge cuando las elecciones basadas en el valor no son confiables, lo que indica un aprendizaje flexible en entornos complejos.
Área de la Ciencia:
- Psicología Cognitiva
- Neurociencia
- Economía Conductual
Sus antecedentes:
- Los efectos de frecuencia, un sesgo hacia las opciones recompensadas con frecuencia, a menudo se consideran déficits en la toma de decisiones.
- Sin embargo, su papel adaptativo, especialmente en relación con el aprendizaje, sigue sin estar claro.
Objetivo del estudio:
- Investigar si el aprendizaje de referencia superior predice una mayor susceptibilidad a los sesgos basados en la frecuencia.
- Explorar la relación entre la precisión del aprendizaje y la toma de decisiones basada en la frecuencia en condiciones variables de recompensa.
Principales métodos:
- Un diseño intra-sujeto utilizando una tarea de aprendizaje por refuerzo de cuatro opciones.
- Los participantes completaron la tarea en condiciones de manipulación de la frecuencia de recompensa y de referencia.
- Modelado computacional para evaluar las estrategias de aprendizaje y toma de decisiones.
Principales resultados:
- La mayor precisión de entrenamiento se correlacionó con un mejor rendimiento general, pero predijo un sesgo de frecuencia más fuerte en escenarios de elección específicos.
- Los participantes con un mejor aprendizaje de referencia mostraron un mayor sesgo hacia opciones más frecuentes y de menor valor.
- Los modelos computacionales sensibles a la frecuencia se ajustan mejor a los participantes con un aprendizaje de referencia más alto.
Conclusiones:
- Los efectos de frecuencia son más pronunciados en individuos con un mejor aprendizaje de referencia, no necesariamente indicativos de un aprendizaje defectuoso.
- Este sesgo puede representar una estrategia flexible y adaptativa en entornos inciertos donde las decisiones basadas en el valor son costosas o poco confiables.
- Los hallazgos desafían la visión tradicional de los efectos de frecuencia como puramente maladaptativos.
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