I don't like it.
I think it's very important to make people comfortable with the idea that they often make mistakes and their thinking is not up to par. You need to make them comfortable thinking about their thinking and being open about it. To do that you need to point a lot of mistakes and encourage them to think about the process leading to them. That's difficult for many people (because of ego mainly).
However the woman from the article doesn't achieve it in my view.
Her way is to inflict guilt:<p>>>Spiegel’s face tensed. “We did not bring you here so that you could spend two seconds on a move,” she said with an edge in her voice<p>>>“This is pathetic. If you continue to play like this, I’m going to withdraw you from the tournament,<p>>> I’m very, very, very upset to be seeing such a careless and thoughtless game.<p>I call it bullying. Why not just focus on the thought process and try to detach emotions from it, that's what the kid needs to learn in the first place:<p>-"How much time did you spend here?"<p>-"Two seconds"<p>-"You see, spending two seconds here led to a blunder which you suffered from for rest of the game, we need to work on your thinking habits. There is not much time for that now and as I screw up as your teacher not teaching it to you before for now I only suggest that once you decide on a move, look away from the board, try to reset your mind, sit on your hands and look at the board as freshly as possible for 15 seconds to see if you are not blundering anything".<p>Then you add: "Thinking habits in chess are everything, a lot of brilliant players never make progress because occasional slips and a lot of not-so-brilliant ones enjoy success because they avoid simple mistake thanks to good habits". "We are going to work on this after the tournament, there are many ways. Rest assured it's main problem chess players have, you are not alone. How well people improve in that area is going to be a difference between winning and losing so it's exciting area to focus on".
Then you discuss ego, how not willing to admit your own mistakes is major road block and how it's perfectly ok to discuss mistakes but it's not ok to be happy about them or comfortable with them! You need healthy dose of ambition you need to be disappointed... but optimistic and believing you can get better.
Feeling guilty won't lead there. Feeling like you are disappointing other people won't lead there (even if it won't be long term, it's dependence on external motivator - disappointing someone. At one time this someone won't be there). If you act like the woman from the article people will avoid you - nobody wants to feel guilty after all. They want to improve, work on their thinking, compete and have fun.<p>Her way shows characteristics of bad teachers and bad parent. I've encountered both and I think it's the best way to kill natural joy and passion quickly even if you get some quick results - it won't be long term and it won't be to maximum potential.