Thanks for your response. I am actually a PhD student of applied linguistics, and I'm trying to explain one of my findings, where I had two groups of students who were engagend in writing practice for three months. Group A received corrective feedback on specific error categories. Group B received no feedback.
When I asked Group B, "how much of their grammar they would like to see corrected by the teacher?" half of them responded "all" and the other half "much but not all". However, when I asked the same question from Group A, almost all responded "all".
I think this situation can be explained sociologically as well.
Thanks again. Ali