Yes, that’s correct. The students eventually caught on and started directing their own learning. You’re right, it’s hard to determine or predict how much time this requires, as it’s different for everyone. In answer to your question, I think it depends on the instructor and the learners. As educators it is our job to know our own limits and boundaries, be able to assess the needs and abilities of learners and also use our discretion in determining how best to help them. I think this case might have been special in that the instructor was actually trying to rattle the students and get them to take a leap into something new. In this case, it was a 50 minute university class. I might say that withholding intervention for an entire class might be warranted. It seems extreme, but sacrificing that class and giving students time to reflect until the next class and then discussing (intervening) in the next meeting might have a big impact. What do you think? Overall, I think it’s important to remember that the role of an instructor in a student-centered model is still to facilitate and offer guidance and feedback at all times. This was an extreme case to be sure. However, it might also be worth noting that even a student asking a question was a success in this class. So, the instructor was merely waiting for any kind of self-motivated act.