Previous studies have reported contradictory relationships between social class and prosocial behaviour. Some studies have found that higher class individuals are more likely to exhibit prosocial behaviour than lower class individuals; whereas in others the opposite was observed. In view of this difference, this study proposed and tested the moderating role of perception of class mobility. Studies 1 and 2, using different operational definitions, revealed that the interaction effect between social class and perceived class mobility on prosocial behaviour was significant. Under the condition of lower perception of class mobility, lower class individuals showed less prosocial behaviour than higher class individuals. When perception of class mobility was higher, however, the prosocial behaviour of lower class individuals increased, showing no significant difference between lower and higher class individuals. Study 3 further explored why perception of class mobility might influence lower class individuals’ prosocial behaviour and supported a mediating role of system-justifying belief. To some extent, these results provide a new perspective to understand the relationship between social class and prosocial behaviour.

中文翻译：

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对阶级流动的感知调节了社会阶级和亲社会行为之间的关系

以前的研究报告了社会阶层和亲社会行为之间的矛盾关系。一些研究发现，较高阶层的人比较低阶层的人更有可能表现出亲社会行为；而在其他人中则观察到相反的情况。针对这一差异，本研究提出并检验了阶级流动感知的调节作用。研究 1 和 2 使用不同的操作定义，表明社会阶层和感知阶层流动对亲社会行为的交互作用是显着的。在对阶层流动性感知较低的情况下，较低阶层的个体比较高阶层的个体表现出更少的亲社会行为。然而，当对阶级流动性的感知较高时，下层个人的亲社会行为会增加，显示低级和高级个体之间没有显着差异。研究 3 进一步探讨了为什么对阶级流动性的感知可能会影响下层个人的亲社会行为，并支持系统辩护信念的中介作用。在某种程度上，这些结果为理解社会阶层与亲社会行为之间的关系提供了新的视角。