Perception of Korean Stop Consonants in the Seoul Dialect by Thai Learners of Korean as a Foreign Language
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Abstract
The purpose of this study was to examine the perception of Korean stop consonants in the Seoul dialect—aspirated, lenis, and fortis—at the bilabial, alveolar, and velar places of articulation, by Thai students learning Korean as a foreign language. The participants were 32 Thai undergraduates, aged between 18-23, all from southern provinces of Thailand. They were bidialectal speakers of Thai (Southern Thai and Bangkok Thai) and had no prior experience in learning Korean before entering university. The research instruments consisted of (1) a list of sample words for constructing auditory stimuli, (2) a discrimination task comprising 50 items, (3) an identification task (AXB) comprising 60 items, totaling 110 test items, and (4) answer sheets. All instruments underwent acoustic quality control of the stimuli and content validity evaluation by three experts: specialists in phonetics and native speakers of Seoul Korean. The statistical methods used in this study were percentage and the Chi-square test. The results showed that the participants were able to discriminate and identify the differences between aspirated and lenis stops, as well as between aspirated and fortis stops, with a high degree of accuracy. However, they exhibited statistically significant confusion (p < .05) in distinguishing between lenis and fortis stops, with a higher proportion of incorrect responses compared to other stop contrasts. These findings indicate that Thai learners of Korean face specific limitations in perceiving Korean stop consonants, particularly in distinguishing lenis from fortis.
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