Efecto de la dominancia diádica sobre la indefensión aprendida

• Autores: Cristina Díaz-Berciano, Francisco de Vicente Pérez
• Localización: Psicothema, ISSN-e 1886-144X, ISSN 0214-9915, Vol. 17, Nº. 2, 2005, págs. 292-296
• Idioma: español
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• 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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