Yes there have been studies done on Personal Information Management. One such study was done particularly on email. The name of the study group was "Lotus Development Corporation".
If Information Architecture had to be placed into a field I would say Science, Architecture, Planning, and Environmental Designing, although in my opinion it would be based in a simple category such...
answers.com Components of for information retrieval what are they what are the thay the answers.comnComponentsnFeaturesnHow it worksnCoverage/sizeall this are my assignments