This was Warfield's original paper prepared for the conference in Colorado in spring of 1980. The following year a revised version of this paper was published, under the same title, as a book chapter. This 1980 paper differs from the published version in that much more space is given to Warfield's debt and admiration for Harary's work in graph theory, also Warfield's view of how interpretive structural modeling should become useful in group learning, "using the computer in assisting the learning process."
It is now cataloged as part of a readme.wpd set of three files, each a different version, in [id 00412], but this record 1214 is also retained in the Web Catalog, in order to better describe this 1980 version.