การรับการกลมกลืนฐานกรณ์เสียงพยัญชนะท้ายนาสิกตามเสียงที่ตามมาในภาษาญี่ปุ่นของผู้เรียนคนไทย : การศึกษาตามแนวทฤษฎีอุตมผล / ธนศักดิ์ ศิริคะเณรัตน์ = Acquisition of Japanese nasal place assimilation by Thai learners : an optimality theoretical account / Thanasak Sirikanerat
To study the acquisition of Japanese nasal place assimilation by Thai learners within optimality-theoretical framework using experimental data. It is hypothesized that outputs produced by participants vary according to the constraints ranking in each developmental stage. Results show that participants can be divided into 3 groups according to their outputs. First, a group which produces only [n]. Second, a group which produces only [n] and [ŋ]. The last group, produces all sounds, including [m], [n] and [ŋ]. However, no participants in this research produce /N/ as [m] when followed by alveolar and velar sounds. The analysis also reveals only the third shows assimilation. Outputs of participants in the first group and the second groups show effects of faithfulness constraints and markedness constraints respectively. Moreover, constraint ranking in each group suggests that the participants in the first group represent the initial stage of development, the second group the intermediate stage, and the third group the most developed stage. This research thus supports the hypothesis that outputs produced by participants vary according to different constraints ranking in each stage of development.
