In particular, the teacher could tell the student to take on various tasks or do experiments which might lead to a breakthrough, or possibly work to lower the student’s level of background anxiety—the latter is plausible to me because there might be a reason the student has no trust in his or her own perceptions and thoughts, and that reason might be locked in place by fear. Of course, I’m just guessing about a hypothetical student—the teacher (if competent) should be able to form hypotheses about why the student is so stuck and what might help.
No, but there may be something the teacher can do.
In particular, the teacher could tell the student to take on various tasks or do experiments which might lead to a breakthrough, or possibly work to lower the student’s level of background anxiety—the latter is plausible to me because there might be a reason the student has no trust in his or her own perceptions and thoughts, and that reason might be locked in place by fear. Of course, I’m just guessing about a hypothetical student—the teacher (if competent) should be able to form hypotheses about why the student is so stuck and what might help.