Four experiments, conducted in South Korea and Scotland, drew on uncertainty–identity theory to investigate how recategorization and ingroup projection interplay to maintain a clear, certain sense of identity in people's hierarchy of self‐categorizations. Experiment 1 (N = 74) found that people who were made to feel uncertain about a subgroup identity that was central to their self‐concept, identified more strongly with and felt more certain about their superordinate identity (H1). In Experiment 2 (N = 70), people were made to feel uncertain about their superordinate identity. Where ingroup projection was low, people also felt uncertain about their subgroup identity (H2). However, when ingroup projection was high, they did not feel uncertain about their subgroup identity (H3). These two experiments support our proposition that uncertainty at the subgroup and the superordinate level can be restored by recategorization and ingroup projection. Experiments 3 and 4 (Ns = 91 and 67) converge to show that when people were uncertain about both superordinate and subgroup identity, they resolved this dual uncertainty by enhancing perceived entitativity of the most central group. If the subgroup was more central, they increased support for subgroup separation so that the subgroup had a clear boundary whereas if the superordiate group was more central, they increased support for integration so that the superordinate group could be a cohesive entity without internal fragmentation (H4). The findings are discussed in terms of group resilience in the face of social change and uncertainty.

中文翻译：

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重新分类和群体内预测：减少身份不确定性的两个过程

在韩国和苏格兰进行的四个实验利用不确定性-身份理论来研究重新分类和群体内投射如何相互作用，以在人们的自我分类层次结构中保持清晰，确定的身份感。实验1（N =  74）发现，那些对自己的概念至关重要的亚组身份感到不确定的人，与上级身份（H1）的联系更加强烈，并且更加确定。在实验2（N = 70），人们不得不对上级身份感到不确定。在小组内预测较低的地方，人们也对他们的小组身份（H2）感到不确定。但是，当小组内预测很高时，他们并不确定自己的小组身份（H3）。这两个实验支持我们的主张，即可以通过重新分类和组内投影来恢复子组和上级的不确定性。实验3和4（Ns = 91和67）收敛表明，当人们不确定上级身份和亚组身份时，他们通过增强最核心组的感知能力来解决这种双重不确定性。如果子组更集中，则他们会增加对子组分离的支持，从而使子组具有清晰的边界;而如果上等原住民群体更集中，则它们会增加对集成的支持，从而使上级组成为一个没有内部分裂的凝聚力实体（H4 ）。面对社会变化和不确定性时，将根据群体的适应力来讨论研究结果。