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Park, See-Gyoon & Kim, Ji-Young. 2016. A Study on the Perception and Production of Korean Single and Geminate Stops in Intervocalic Position by Korean Native Speakers. Journal of Linguistics, 41-4, 571-591. There has been a long debate of ‘deletion’ of preceding one of Korean geminate stops in intervocalic position amongst scholars(Kim, 1981; Lee, 2005; Heo, 1965; Ryu, 1989; Pae, 1996; Kim & Oh, 2013; Kim, 2014). Our perception and production experiments revisited this matter to examine whether the preceding stop is deleted or not. In the perception test, the subjects could not distinguish amongst ‘ap$pa’, ‘a$p’a’ and ‘ap$p’a’types under‘natural speech condition’. They, however, could distinguish ‘ap$pa’ and ‘ap$p’a’types with over 70% of correctness rate under ‘cautious speech condition’. In the production test, the subjects showed that they used the length of closure duration (CD) of the geminate stops for giving distinguishing cues for ‘ap$pa’ and ‘ap$p’a’types and the length of voice onset time (VOT) for ‘ap$pa’type not under ‘natural speech condition’ but under‘cautious speech condition’. Our outcome shows that the matter of deletion of the preceding stop has complex factors to elicit a clear answer. (Kunsan National University)