In reply to oldie:
> Our neighbour's 12 year old son was taken to local wall as a birthday treat. He got to top and then completely freaked out as he wouldn't let go to be automatically lowered. Must have hugely affected his confidence and put him off climbing.
Similarly, I had to rescue a girl of about 10 who was about 20ft up the wall and wouldnt let go. I got a friend to belay me up and helped her down, but she did look terrified.
I got my own kids to practice stepping off from very low down (head height) to get used to the feel of it, before climbing to the top and lowering. They absolutely love it now, although I'm always careful to make sure they are clipping in correctly at the start of a session.
Its a totally unnatural thing to do, and easy to see how it can scare people at first (kids or adults).