The extent to which negative bias toward foreign‐accented speakers originates from social categorization (in‐group/out‐group categorization) and/or from processing fluency (ease in processing information) is not clear. Some have argued that accent first induces a social identity effect and that processing fluency later modifies the impact of this effect. Using event‐related potentials (ERPs), this registered report tested this hypothesis, looking at the effect of social categorization and processing fluency on sentence processing. Truth evaluation and the ERP data (N400) did not show significant differences across native and foreign speakers. Debriefing scores on social variables (e.g., status) were lower for foreign speakers, and an exploratory analysis revealed a larger P200 (related to acoustic features) for the native than for the foreign speakers. Hence, foreign speakers were not necessarily perceived as less credible, but accent negatively affected the evaluation of speakers on social variables.

中文翻译：

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异国或加工流利？关于理解针对外国演讲者的负面偏见

对外来说话者的消极偏见在多大程度上源自社会分类（小组内/小组外分类）和/或处理流利程度（便于处理信息）尚不清楚。有些人认为，口音首先会引起社会认同感，而处理流畅性则会改变这种效果的影响。该注册报告使用事件相关电位（ERP），检验了这一假设，研究了社交分类和流利处理对句子处理的影响。真实评估和ERP数据（N400）在母语为母语的人和外国语的人之间没有显示出显着差异。外籍讲者在社交变量（例如地位）方面的汇报分数较低，一项探索性分析显示，母语为P200的人比外国人讲的更大。因此，未必一定会认为外国演讲者的可信度较低，但是口音会对演讲者对社会变量的评估产生负面影响。