Bago, B., Kovacs, M., Protzko, J. et al.
Nat Hum Behav (2022).
https://doi.org/10.1038/s41562-022-01319-5
Abstract
The study of moral judgements often centres on moral dilemmas in which options consistent with deontological perspectives (that is, emphasizing rules, individual rights and duties) are in conflict with options consistent with utilitarian judgements (that is, following the greater good based on consequences). Greene et al. (2009) showed that psychological and situational factors (for example, the intent of the agent or the presence of physical contact between the agent and the victim) can play an important role in moral dilemma judgements (for example, the trolley problem). Our knowledge is limited concerning both the universality of these effects outside the United States and the impact of culture on the situational and psychological factors affecting moral judgements. Thus, we empirically tested the universality of the effects of intent and personal force on moral dilemma judgements by replicating the experiments of Greene et al. in 45 countries from all inhabited continents. We found that personal force and its interaction with intention exert influence on moral judgements in the US and Western cultural clusters, replicating and expanding the original findings. Moreover, the personal force effect was present in all cultural clusters, suggesting it is culturally universal. The evidence for the cultural universality of the interaction effect was inconclusive in the Eastern and Southern cultural clusters (depending on exclusion criteria). We found no strong association between collectivism/individualism and moral dilemma judgements.
From the Discussion
In this research, we replicated the design of Greene et al. using a culturally diverse sample across 45 countries to test the universality of their results. Overall, our results support the proposition that the effect of personal force on moral judgements is likely culturally universal. This finding makes it plausible that the personal force effect is influenced by basic cognitive or emotional processes that are universal for humans and independent of culture. Our findings regarding the interaction between personal force and intention were more mixed. We found strong evidence for the interaction of personal force and intention among participants coming from Western countries regardless of familiarity and dilemma context (trolley or speedboat), fully replicating the results of Greene et al.. However, the evidence was inconclusive among participants from Eastern countries in all cases. Additionally, this interaction result was mixed for participants from countries in the Southern cluster. We only found strong enough evidence when people familiar with these dilemmas were included in the sample and only for the trolley (not speedboat) dilemma.
Our general observation is that the size of the interaction was smaller on the speedboat dilemmas in every cultural cluster. It is yet unclear whether this effect is caused by some deep-seated (and unknown) differences between the two dilemmas (for example, participants experiencing smaller emotional engagement in the speedboat dilemmas that changes response patterns) or by some unintended experimental confound (for example, an effect of the order of presentation of the dilemmas).
