Identification of English voiceless fricatives by Japanese listeners: The influence of vowel context on sensitivity and response bias
Identification of English voiceless fricatives by Japanese listeners: The influence of vowel context on sensitivity and response bias
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日本听众对英语清摩擦音的识别：元音上下文对敏感性和反应偏差的影响
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发表时间：
2001
期刊：
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通讯作者：
J. Berman
中科院分区：
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作者：
S. Lambacher;W. Martens;B. C. Nelson;J. Berman
为了检验以日语为母语的人区分英语不发音摩擦音的能力，对104名日本英语学生进行了一项五选项强迫选择（5AFC）测试。刺激包括75个无意义音节，其中有5个摩擦音（/f/, /s/, /∫/,/θ/, /h/）在5个元音环境（/i ea o u/）和3个不同的辅音环境中出现，并由3个英语母语者说出。将识别率提交给信号检测理论（SDT）分析（用d '测量）、多维尺度（MDS）分析和聚类分析。总体而言，对/∫/刺激的识别率最高为88%，对/θ/刺激的识别率最高为55%。结果表明，在本研究中，元音环境和辅音环境都对听者对刺激的感知产生影响。另一个由六名英语母语受试者组成的对照组采用同样的程序进行了同样的识别测试。除了/f/ - /θ/对比外，所有对照听者在识别目标摩擦音方面都没有困难。
In order to examine the ability of native Japanese speakers to distinguish between English voiceless fricatives, a five-alternative, forced-choice (5AFC) test was administered to 104 Japanese students of English. The stimuli consisted of 75 nonsense syllables in which five fricatives (/f/, /s/, /∫/, /θ/, /h/) were presented in five vowel environments (/i e a o u/) and in three different consonant contexts, and were spoken by three native speakers of English. The identification rates were submitted to signal-detection-theoretic (SDT) analysis (measured by d′), multidimensional-scaling (MDS) analysis, and cluster analysis. Overall, identification rates ranged from a maximum of 88% for the /∫/ stimuli to 55% for the /θ/ stimuli. The results showed that both vowel environment and consonant context had an effect on the listeners’ perception of the stimuli in this study. A control group of six native English subjects took the same identification test using the same procedure. All of the control listeners had no difficulty in identifying the target fricatives except in the case of the /f/–/θ/ contrast.