10 hour 'itis.
I would add one more element to this phenomenon. The fear of failure was often enhanced by the other members of the course who went solo in the early initial stage which must have added to the concerns of those lagging in the 'solo stakes'. From later service as a QFI, it was clear that those who reached solo early often had the benefit of previous flight experience (PPL etc). That was not always common knowledge among the student course members