Derivational knowledge is associated with writing and speaking skills. These skills are essential for EFL students who express themselves in oral presentations or written assignments. Therefore, diagnostic measurement of productive derivational knowledge is of vital importance, especially in regard to the most frequent 1,000 word families that…

English articles are thought to be complex, ambiguous and not salient in spoken language, which is why second language (L2) learners of English exhibit usage variability. Much of the L2 acquisition literature seems to agree that L2 learners are affected, one way or another, by their first language (L1). However, the debatable and controversial…