Written data versus video data: what questions are answered about the nature of science?

I had the idea this morning that I think it would be interesting to compare video records of what happened in UE2 on days 2 and 3 (lack of shared consensus about what a model is to shared model for thermal energy) to written records of the nature of science pre- and post-surveys we are collecting.  I think the latter might tell us if there are shifts in teachers' thinking, and the former might tell us how those shifts happened.  I'd bet our community would appreciate such a paper -- about the same thing, involving the same people, using different data and answering different questions.  I'll put it on my to-think-about list.