  Using the referencing patterns in articles in Cognitive Science over three
decades, we analyze the knowledge base of this literature in terms of its
changing disciplinary composition. Three periods are distinguished: (1)
construction of the interdisciplinary space in the 1980s; (2) development of an
interdisciplinary orientation in the 1990s; (3) reintegration into "cognitive
psychology" in the 2000s. The fluidity and fuzziness of the interdisciplinary
delineations in the different visualizations can be reduced and clarified using
factor analysis. We also explore newly available routines ("CorText") to
analyze this development in terms of "tubes" using an alluvial map, and compare
the results with an animation (using "visone"). The historical specificity of
this development can be compared with the development of "artificial
intelligence" into an integrated specialty during this same period.
"Interdisciplinarity" should be defined differently at the level of journals
and of specialties.
