Non-native speech recognition sentences: A new materials set for non-native speech perception research

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Abstract

Research into non-native (L2) speech perception has increased the need for specialized experimental materials. The Non-Native Speech Recognition (NNSR) sentences are a new large-scale set of speech recognition materials for research with L2 speakers of English at CEFR level B1 (North, Ortega, & Sheehan, 2010) and above. The set comprises 439 triplets of sentences in three related conditions: semantically predictable, neutral, and anomalous. The sentences were created by combining a strongly or weakly contextually constrained sentence frame with a congruent or anomalous final keyword, and they were matched on a number of factors during development, to maintain consistency across conditions. This article describes the development process of the NNSR sentences, along with results of speech-in-noise intelligibility testing for L2 and native English speakers. Suggestions for the sentences’ application in a range of investigations and experimental designs are also discussed.

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Stringer, L., & Iverson, P. (2020). Non-native speech recognition sentences: A new materials set for non-native speech perception research. Behavior Research Methods, 52(2), 561–571. https://doi.org/10.3758/s13428-019-01251-z

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