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Kim, Jong-kuk. 2013. An Investigation into Korean English Learners' Spoken Vocabulary Use in a Speaking Test. Journal of Linguistic Studies 18(2), 1-20. Despite the importance of spoken vocabulary use to improve spoken skills, little has been conducted to describe spoken features of Korean learners in a testing context. The purpose of this study is to investigate spoken vocabulary use of Korean learners and find out how far they deviate from native speaker norms. For this purpose, 40 Korean college students' spoken interaction data are transcribed and analysed. Using Wordsmith tool with 17,436 words, frequent single-word category and frequent multi-word clusters are compared with the spoken British National Corpus. Frequency analysis revealed that among 56 lexical items investigated, 34 items were underused and 17 items are not represented in Korean Learner's Corpus. It is evident that Korean learners used limited varieties and range in those spoken vocabulary uses. It was argued that, if any speaking test intends to reflect target language use and have a positive impact on the test-related learning, the spoken features of elicited test samples can be meaningful evidence to question the construct and consequential test validity. (Jangan University)