Efecto de la dominancia diádica sobre la indefensión aprendida

  1. Díaz-Berciano, Cristina
  2. Vicente Pérez, Francisco de
Revista:
Psicothema

ISSN: 0214-9915

Año de publicación: 2005

Volumen: 17

Número: 2

Páginas: 292-296

Tipo: Artículo

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Otras publicaciones en: Psicothema

Resumen

Se ha investigado el efecto de la dominancia social sobre la indefensión aprendida utilizando cuarenta ratas que realizaron una prueba de competición diádica. Veinte animales fueron distribuidos entre los grupos controlable y control. Se estableció el rango dominancia-sumisión por pares en los veinte restantes según acceso al agua, asignando un sujeto al grupo Incontrolable-Dominante-Acoplado (IDA) y otro al grupo Incontrolable-Sumiso-Acoplado (ISA). En la primera fase los animales del grupo controlable recibieron descargas escapables, los del grupo control no recibieron tratamiento y los de los grupos IDA e ISA recibieron descargas inescapables. Posteriormente, los grupos fueron entrenados en una tarea de escape-evitación discriminada. La latencia de la respuesta del grupo ISA fue mayor que la del resto. El número total de respuestas y número de respuestas de escape-evitación fue menor en el grupo ISA que los grupos controlable y control. La dominancia social parece actuar como moduladora de la indefensión.

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