Lively, S. E., Logan, J. S., & Pisoni, D. B. (1993). Training Japanese listeners to identify English /r/ and /l/ II: The role of phonetic environment and talker variability in learning new perceptual categories. Journal of the Acoustical Society of America, 94(3), 1242–1255.
Presentation: Sally
Summary: Angela
This paper was an aftermath study of Logan et al. (1991), which tried to test whether more speakers’ variability would facilitate Japanese L2 learners of English in their perception of /r/ and /l/. In the present study, the authors had three specific aims. One was to see if the results of Logan et al. (1991) could be reduplicated in terms of the accuracy patterns observed. Results of the present study did successfully reduplicate the results of the previous experiments. In particular, there was an increase in accuracy in the posttest condition compared with the pretest condition in at least the environments of /r/ and /l/ placed in the initial position, initial consonant clusters, and the intervocalic position. Another goal of this study was to observe the RT patterns of the subjects. This was not done in the previous study. The RT results were in line with those of the accuracy results. There was a tendency for the subjects to decrease in RT in the posttest compared with the pretest. This indicated that subjects were improving their ability to discern the two sounds. Finally, to test whether such an effect was simply a result of training or a result stemming from training with multiple speakers, the authors carried out another experiment in which the training period only involved one talker. A comparison of the two experiments conducted in this study showed that training with multiple speakers did have a positive effect on the improvement of foreign sound perception. This implied that talker information was indeed incorporated in perception.
Presentation: Sally
Summary: Angela
This paper was an aftermath study of Logan et al. (1991), which tried to test whether more speakers’ variability would facilitate Japanese L2 learners of English in their perception of /r/ and /l/. In the present study, the authors had three specific aims. One was to see if the results of Logan et al. (1991) could be reduplicated in terms of the accuracy patterns observed. Results of the present study did successfully reduplicate the results of the previous experiments. In particular, there was an increase in accuracy in the posttest condition compared with the pretest condition in at least the environments of /r/ and /l/ placed in the initial position, initial consonant clusters, and the intervocalic position. Another goal of this study was to observe the RT patterns of the subjects. This was not done in the previous study. The RT results were in line with those of the accuracy results. There was a tendency for the subjects to decrease in RT in the posttest compared with the pretest. This indicated that subjects were improving their ability to discern the two sounds. Finally, to test whether such an effect was simply a result of training or a result stemming from training with multiple speakers, the authors carried out another experiment in which the training period only involved one talker. A comparison of the two experiments conducted in this study showed that training with multiple speakers did have a positive effect on the improvement of foreign sound perception. This implied that talker information was indeed incorporated in perception.
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