The Bluegrass corpus includes sentences from 40 pairs of speakers. Participants from the Bluegrass Region rated one speaker from each pair as having a native North American English accent and the other as having a foreign accent (Experiment 1). Furthermore, speakers within each pair looked very similar in appearance, in that participants rated them similarly likely to speak with a foreign accent (Experiment 2). For each speaker we selected eight sentences based on participants’ ratings of difficulty (Experiment 3). The final corpus includes a selection of 640 sentences (80 speakers, 8 stimuli per speaker) freely available through the Open Science Framework. Each sentence can be downloaded in different formats (text, audio, video) so researchers can investigate how audio-visual information influences language processing. Researchers can contribute to the corpus by validating the stimuli with new populations, selecting additional sentences, or finding new TED videos featuring appropriate speakers to answer their research questions.

Bluegrass 语料库包括来自 40 对说话者的句子。Bluegrass 地区的参与者将每对中的一位说话者评为具有北美本土英语口音，另一位则具有外国口音（实验 1）。此外，每对说话者的外表看起来非常相似，因为参与者认为他们说话的可能性相似（实验 2）。对于每个演讲者，我们根据参与者的难度等级选择了八个句子（实验 3）。最终语料库包括通过开放科学框架免费提供的 640 个句子（80 个发言者，每个发言者 8 个刺激物）的选择。每个句子都可以以不同的格式（文本、音频、视频）下载，因此研究人员可以研究视听信息如何影响语言处理。