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14 - The determinants of types: variables and attributes

Published online by Cambridge University Press:  23 November 2009

William Y. Adams
Affiliation:
University of Kentucky
Ernest W. Adams
Affiliation:
University of California, Berkeley
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Summary

As we saw in Chapter 4, any classification is basically a set of categories. In scientific classifications, the key to formulating such categories is selectivity. That is, scientific classifications are always based on a consideration of some features but not of others, a selection of certain variables and attributes from a wider field of possibilities. What is involved, as Foucault (1973: 132–3) observes, is a deliberate narrowing of the scientist's field of vision, so that certain kinds or domains of information are systematically excluded; for example, color in the case of most stone tool types. It was the introduction of this factor of selectivity which made possible the pioneering classifications of Linnaeus (1735) and other natural scientists of the eighteenth century, whereas their predecessors had aimed at all-inclusive and non-selective descriptions of each biological species that in effect made classification impossible (cf. Foucault 1973: 125–65).

In the last chapter we saw how different purposes affect the choice of features to be considered and not to be considered in making typologies (cf. also Whallon 1982). Here we want to take a closer look at the features themselves. We will categorize them under three headings: invariants, variables, and attributes. Throughout this chapter it is important to bear in mind our distinction between type concepts and type members (see Chapter 3), and to realize that we are talking about the attributes of types (i.e. concepts), and not necessarily about the attributes of individual objects.

Type
Chapter
Information
Archaeological Typology and Practical Reality
A Dialectical Approach to Artifact Classification and Sorting
, pp. 169 - 181
Publisher: Cambridge University Press
Print publication year: 1991

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