Dr. Pierce: Well, one must take a history. One must take a history of the learner and find out, number one, what kinds of previous instruction he’s had or she’s had. And number two, interviewing the parents and finding out if the student’s had any learning issues, or previous teachers. And then number three, interviewing the student, him or herself, because they can usually tell you many times what they feel are problematic tasks for them in the classroom. And then again, most importantly on the part of the teacher, observation — observation of student — the student working in different tasks under different conditions, and comparing his before and after performance on these tasks.