The notion of "textuality" encouraged Halliday and Hasan in 1976 to present their model of discourse analysis through raising questions about whether "cohesion" was a semantic concept or a structural relation, whether a text was a structural unit or not or even if there were semantic or structural relationships within a text.…

It is argued that tasks with different structures yield different performances in terms of accuracy, fluency and complexity. The present study is thus an attempt to investigate the impact of task structure on second language task performance. Thirty two upper-intermediate Iranian learners of English performed two narrative tasks (Structured vs.…