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International integration: multidimensional or unidimensional?

As Boulding has so aptly noted, increases in scientific knowledge are dependent upon precision in prediction, which can only be obtained through precise conceptualization and operationalisation of concepts (1966, pp. 12-14). Thus recent attempts to conceptualize and operationalize international integration as a "multidimensional phenomenon requiring multivariate measurement" (Lindberg, 1970; Nye, 1968) should be of great concern to all scholars in the field.' Conceptually it is not quite clear what the modern multidimensionalist means. He