https://www.eurekalert.org/pub_releases/2020-08/nifn-woo082120.php
News Release 21-Aug-2020
Netherlands Institute for Neuroscience - KNAW
War atrocities are sometimes committed by 'normal' people obeying orders. Researchers from the Netherlands Institute for Neuroscience measured brain activity while participants inflicted pain and found that obeying orders reduced empathy and guilt related brain activity for the inflicted pain. This may explain why people are able to commit immoral acts under coercion.
Many examples in the history of mankind have shown that when people obey orders from an authority, they are able to perform atrocious acts towards others. All the genocides that mankind has known, generally referred to as crimes of obedience, have shown that having a part of the population complying with orders to exterminate other human beings led to the loss of countless lives, cultures and civilizations.
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In the study published in NeuroImage, the authors used pairs of participants, with one being assigned the role of 'agent' and the other the role of 'victim'. Agents were placed in an MRI scanner to record their brain activity during the task. They were told that they had two buttons; one triggering the administration of a real, mildly painful, shock on the victim's hand in exchange for +0.05€, and another triggering no shock and no money. Over the course of 60 rounds, agents were either free to choose to administer - or not - this shock to the victim, or they received orders from the experimenter to inflict - or not - the same shock. This task was designed to involve a difficult moral decision for agents: increasing one's own monetary gain by causing pain to another person or not.
The authors observed that agents sent more shocks to victims when they were coercively instructed than when they freely decided. "Neuroimaging results showed that empathy-related regions were less active when obeying orders compared to acting freely. We also observed that obeying orders reduced activations in brain regions associated with the feeling of guilt", explains Kalliopi Ioumpa, co-first author of the present study.
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