Testing thrasymachus' hypothesis: the psychological processes behind power justification

Research on distributive justice has shown that people's judgments on how to distribute resources justly are shaped by various criteria including equity, need, equality, and prior ownership. Yet, an important question remains open: do people's judgments about justice take the power of the actors under consideration? In other words, to people deem the powerful to deserve a larger share even when their contribution, need, and prior ownership are equal? The paper addresses this question. Online, participants had to judge the just distribution of resources among actors who were equal in all respects except regarding power. Results revealed that a substantial proportion of participants believed that more powerful actors deserved more resources, an effect referred to as power justification. The effect was related with social dominance orientation (SDO), indicating that high-SDO participants manifested enhanced power justification. These results were replicated in three countries, suggesting that, although cultural differences are possibly important, in most societies power justification might be a criterion advocated by some people in certain occasions. These findings can inspire research about important domains where judgments about justice and power are at play, such as about how juries deliberate and about how public opinion reacts to international conflicts.

Automated summary

Research has shown that power influences people's judgments about justice, with some individuals believing that more powerful actors deserve a larger share of resources. This effect is related to social dominance orientation and has been replicated in multiple countries. These findings are valuable for studying domains where justice and power are at play.