native and non-native use of lexical bundles in discussion section of political science articles

the study of lexical bundles, among types of text analysis, is gaining importance over the others in the last century. the present study employed a frequency-based analysis approach to the use of lexical bundles. the discussion section of 60 political science articles, with corpora around 253,063 words were investigated in three aspects of structure, form, and function of lexical bundles. the present study selected its data pool out of scholarly articles from qualified journals  in the field of political sciences. one part of the data pool was made up of 30 articles written by american native speakers. the second half of the data comprised the 30 articles written by iranian scholars in political sciences. the findings showed that native and persian-speaking writers employed the same forms of lexical bundles, and there were significant differences concerning the nativeness and functions. bearing in mind the findings of the present study, material developers would think of the possibility of the addition of lexical clusters into the materials. it can similarly be valuable for the development of the second language writing strategies, for those who need to write in academic contexts especially political contexts.