This study investigated the effect of self-monitoring activity on Korean L2 learners' perception and production of Japanese long and short vowels in word final position. Subjects were divided into two groups. The experimental group performed a self-monitoring task whereas the control group performed a traditional pronunciation learning task. Data from an identification test using words and from a perception test using stimuli were collected. Each subject's pronunciation was evaluated by native speakers and by acoustic analysis. The results indicated that self-monitoring activity facilitates modification of previous patterns of perception and production of the target sounds.
