Native English speakers rely on spectral cues primarily and durational cues secondarily for /i/-/ɪ/ distinction whereas Chinese EFL learners tend to ignore tense-lax markedness due to a lack of lax /ɪ/ in Chinese vowel inventory and the speakers' insensitivity to formant values. Therefore, this study aims to explore whether Chinese speakers can use both durational and spectral cues for /i/-/ɪ/ distinction and whether females and males perform similarly in a perception test. The test was administered to 12 intermediate-level Chinese native speakers. Beat and bit were used as the basic stimuli and each stimulus was manipulated with seven different durations. The result showed that participants were predisposed to regard stimulus with long durations as /i/ and short durations as /ɪ/. Both the factor of gender and vowel duration had a significant effect on the correctness. Females were outperformed by males in the perception test correctness in most duration points except for very short vowels. Additionally, the size of differences between genders was larger in /ɪ/ than /i/ responses. In conclusion, although no significant spectral cue use was found with the participants, some uses of spectral cues at different vowel durations (90 ms, 390 ms, and 450 ms) were observed.
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