Group Identification: The Same Thing to All People?
研究检验了社会认同理论中群体认同强度与群际分化正相关的假设，发现两者关系并非一致正相关，而是因亚群体和态度维度而异，感知冲突才是更可靠的分化预测因素。
The hypothesis derived from Social Identity Theory that strength of group identification would be positively correlated with intergroup differentiation is tested. Data was obtained from 55 workers in a bakery using semistructured interviews. Analysis showed clear differentiation between the factory departments by subgroups of workers along dimensions of perceived contribution to the running of the factory and expressed friendliness towards out-groups. However, multiple regression analyses revealed that the relationship between group identification and intergroup differentiation was not consistently positive but varied between subgroup and between attitude dimensions. The most reliable predictor of differentiation, consistent with Realistic Conflict Theory, was perceived conflict between ingroup and outgroups.