4. Conclusion
This study revealed the changes in robustness (automaticity) of JP L2 speech processing appear to need more than two semesters of classroom experience and that the accelerated learning program does not improve L2 speech perception for these vowel contrasts, even though vocabulary and grammatical learning was accelerated. It will be important to further test this claim with a larger group of participants, considering that the current result was based on a small group of participants. If this finding is replicated, specifically that little to no gain in L2 speech processing (as measured by MMF) was observed over the brief period for either the standard or accelerated learning program, it indicates that learning of L2 speech patterns is not facilitated by the current classroom curriculum. It will be important to examine whether adding targeted training of L2 speech patterns to teaching programs will allow for improved L2 speech perception over this short time span (one or two semesters).