Making Moral Decisions With Artificial Agents As Advisors. An fNIRS Study
biorxiv(2024)
Abstract
Artificial Intelligence (AI) is on the verge of impacting every domain of our life. It is now being increasingly used as an advisor to help make (moral) decisions. The present study aimed at investigating the influence of moral arguments provided by AI-advisors (i.e., decision aid tool) on human moral decision-making and the associated neural correlates. Participants were presented with utilitarian and deontological sacrificial moral dilemmas and had to make moral decisions either by themselves (i.e., baseline run) or with AI-advisors that provided either utilitarian or deontological advice (i.e., AI-advised run), while their brain activity was measured using an f NIRS device. Overall, AI-advisors significantly influenced participants, who often modified their decisions according to AI-advisors’ arguments. Longer response times and a decrease in right dorsolateral prefrontal cortex activity were observed in response to deontological arguments than to utilitarian arguments. Being provided with deontological arguments by machines appears to have led to a decreased appraisal of the affective response to the dilemmas. This resulted in a reduced level of utilitarianism, supposedly in an attempt to avoid behaving more like a machine than the machines themselves. Taken together, these results suggest that motivational power can led to a voluntary up- and down-regulation of affective processes along moral decision-making.
### Competing Interest Statement
The authors have declared no competing interest.
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