Native and non-native listeners’ evaluation of degrees of foreign accentedness in English: a literature review

Communication in English increasingly involves non-native speakers. Such speakers can speak English with different degrees of non-native accentedness. In order to contribute to insights into the effects that these differences in accentedness can have on listeners, the current study systematically reviews experimental studies into the effects of degrees of foreign accentedness in English. It presents an overview of the L1s of the speakers, nationalities of the listeners, degrees of accent strength tested, dependent variables and outcomes in the studies reviewed. The trend that emerges from the studies included in the review indicates that stronger accents generally have more negative effects on understanding and attitudinal evaluations than weaker accents