Hi Stan,
I am not an IMS expert (I was only worried that no alignment was mentioned) but as far as I understand
http://www.imsglobal.org/question/qtiv1p2/imsqti_asi_infov1p2.html#1442265 , IMS/CTI/ASI are more oriented towards reusage and sequencing rather than statistical comparison. Therefore, I would think that in your example, the new wording of the question must be seen as a different thing in the content repository, and hence the resulting assessment will have to be regarded as a new one, as well. If all the other items in the sequence and all the other sequences in the assessment remain the same, the problem of matching old and new answers could perhaps be mitigated but I think such complicated statistical analysis is so different from normal edu usage that it should at least be hidden from the normal edu course admin (to avoid confusing them) and placed in separate UIs. Couldn't the specs be similarly modularized, as well?
