The scholarly literature in this area distinguishes formative from summative comments. Summative comments are the more traditional approach. They render judgment about an essay after it has been completed. They explain the instructor’s judgment of a student’s performance. If the instructor’s comments contain several critical statements, the student often becomes protective of his or her ego by filtering them out; learning from mistakes becomes more difficult. If the assignment is over with, the student may see no reason to revisit it to learn from the comments.