Özet:

Abstract: This study aims to find out the employment of lexical and syntactic complexities in the undergraduate students’ research articles and their correlations to their quality. It employes a quantitative design through corpus based analysis and correlation analysis using Pearson product-moment correlation coefficient. The results show that lexical density, lexical sophistication, and lexical variation are high except for verb variation, noun variation, adjective variation, adverb variation and modifier variation and the sentence complexity is also high. The quality of the udergraduate students’ research articles is categorized as above good or it is only a half point needed to achieve the criteria of great research article. This research find that there is no correlation between lexical and syntactic complexities with the quality of artiles. It is expected that this article could provide information about the lexical and syntacti complexities which are needed to be improved in the undergraduate students’ research articles. Key Words: lexical complexity, syntactic complexity, article quality

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