Abstract
With The growing academic and governmental interest in quantitative research on nations, it is becoming increasingly important to separate substantive findings from the technical arcana in which they are embedded. In recognition of this need, this report extracts and consolidates the major results of the Dimensionality of Nations (DON) project.The Don project (6) has been in existence since 1962 and is now in its second phase. Phase I of DON defined the major dimensions of variation among all nations for the mid-1950's and the grouping of nations on these dimensions. During this phase much of the methodological underbrush surrounding the use on cross-national data of its major mathematical model—factor analysis—was cleared away, and some measure of control was developed over problems of error and noncomparability in the data.

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