Abstract：
Multiculturalism and tolerance, as two sets of normative beliefs about how to deal with intergroup diversity, have been recognized as effective at reducing outgroup negativity among majority group members. However, whether majority group members\' normative beliefs regarding them might motivate their solidarity-based collective actions and how their political ideology might qualify this influence remained unclear. To answer these questions, we conducted two pre-registered experimental studies (N = 626), both zooming in on the multiculturalism issues in the context of the relationships between native Dutch citizens and citizens with a Moroccan background within Dutch university campuses (Study 1) and broader Dutch society (Study 2). In both studies, we found an ingroup norm of tolerance (vs. control) undermined majority group members\' engagement in collective actions in support of ethnic minorities. Additionally, ideological leftists were more sensitive to norms than rightists: Study 1 showed a facilitative effect of the multiculturalism norm (vs. control) on solidarity-based collective action intentions particularly among leftists, whilst Study 2 revealed a dampening effect of the tolerance norm (vs. control) on these intentions particularly among leftists.
摘要：
多元文化和宽容，作为关于如何处理群体间多样性的两组规范性信念，已被认为可有效减少多数组成员的外组消极情绪。然而,多数群体成员对他们的规范性信念是否会激励他们基于团结的集体行动，以及他们的政治意识形态如何限定这种影响，目前尚不清楚。为了回答这些问题,我们进行了两项预先登记的实验研究(N=626)，在荷兰本土公民与荷兰大学校园内（研究1）和更广泛的荷兰社会（研究2）中具有摩洛哥背景的公民之间的关系的背景下，都放大了多元文化主义问题。在两项研究中，我们发现了一个容忍度的内在规范(与控制)破坏了多数群体成员参与支持少数民族的集体行动。此外,意识形态左派对规范比右派更敏感：研究1显示了多元文化主义规范的促进作用（与控制)基于团结的集体行动意图，特别是在左派中，而研究2揭示了公差标准的抑制作用(与控制)对这些意图的控制，特别是在左翼分子中。
