Japanese Speakers Learning R and L - Effects of Training

Effects of Training

There have been a number of experiments in training Japanese subjects to improve their perception of /r/ and /l/.

Lively et al. (1994) found that monolingual Japanese speakers in Japan could increase their ability to distinguish between /l/ and /r/ after a 3-week training period, which involved hearing minimal pairs (such as 'rock' and 'lock') produced by five speakers, and being asked to identify which word was which. Feedback was provided during training, and participants had to listen to the minimal pairs until the correct answer was given. Participants performed significantly better immediately after the 3-week training, and retained some improvements when retested after 3 months and after 6 months (although there was a decrease in recognition ability at the 6-month test). Reaction time decreased during the training period as the accuracy went up. Participants could "generalize" their learning somewhat: when tested they could distinguish between new /l/ and /r/ minimal pairs, but performed better when the pairs were said by one of the five speakers they had heard before rather than by a new speaker.

Lively, Logan & Pisoni (1993) also found that subjects who were trained by listening to multiple speakers' production of /r/ and /l/ in only a few phonetic environments improved more than subjects who were trained with a single talker using a wider range of phonetic environments.

McClelland, Fiez & McCandliss (2002) argue that it is possible to train Japanese adults to distinguish speech sounds they find difficult to differentiate at first. They found that speech training results in outcomes indicating a real change in the perception of the sounds as speech, rather than simply in auditory perception.

However, it is not clear whether adult learners can ever fully overcome their difficulties with /r/ and /l/. Takagi & Mann (1995) found that even Japanese speakers who have lived 12 or more years in the United States have more trouble identifying /r/ and /l/ than native English speakers do.