English language 13 Foreign speakers Written English Study and teaching 7 Writing 6 Persian speakers 3 Rhetoric 3 Study and teaching (Secondary) 3 Language 2 Study and teaching (Higher) 2 Ability testing 1 College students 1 Collocation (Linguistics) 1 Computer-assisted instruction 1 Contrastive linguistics 1 Discourse analysis 1 Errors of usage 1 Grammar 1 Iranian students 1 Peer-group tutoring of students 1 Psychological aspects 1 Report writing 1 Study and teaching (Graduate) 1 Study and teaching(Higher) 1 Thought and thinking 1 Vocabulary 1 Web-based instruction 1