Department of Political Science, University of Napoli Federico II, Napoli, Italy.
Int J Psychol. 2014 Dec;49(6):480-7. doi: 10.1002/ijop.12073. Epub 2014 May 5.
In two experiments, we investigated how priming European identity as common project versus common heritage affects participants' cooperation in a social dilemma; an additional aim was to explore the mediators involved in the process. In the first experiment, 82 students played a public good dilemma with a European bogus partner and then completed self-report measures of identification with the European Union (EU), group-based trust and collective interest. Results showed that priming a common project-based but not a common heritage-based European social identity fostered cooperative behaviour; this effect was mediated by two sequential mediators: the common project prime increased participants' strength of identification with EU (mediator 1) which, in turn, positively affected group-based trust (mediator 2), fostering greater cooperation. Experiment 2 was conducted with a similar procedure on a sample of 124 students, using a different measure of trust and changing the order of mediators. Results supported those of previous experiment: Priming a project-based EU identity content (compared to heritage-based one) had significant direct and indirect effects on cooperation.
在两项实验中，我们研究了将欧洲身份作为共同项目而非共同遗产进行凸显，如何影响参与者在社会困境中的合作；本研究的另一个目的是探索这一过程中的中介因素。在第一个实验中，82 名学生与一位欧洲虚拟伙伴玩了一场公共物品困境游戏，然后完成了对欧盟认同、群体信任和集体利益的自我报告式测量。结果表明，凸显以共同项目为基础而非以共同遗产为基础的欧洲社会认同促进了合作行为；这一效应由两个连续的中介因素介导：共同项目凸显增强了参与者对欧盟的认同（中介 1），这反过来又积极影响了群体信任（中介 2），从而促进了更大的合作。在第二个实验中，我们在 124 名学生中使用了类似的程序和不同的信任测量方法，改变了中介因素的顺序。结果支持了前一个实验的结果：凸显基于项目的欧盟认同内容（与基于遗产的认同内容相比）对合作有显著的直接和间接影响。
