Biology and Philosophy

, Volume 6, Issue 2, pp 155–180

Must scientific diagrams be eliminable? The case of path analysis

Authors

  • James R. Griesemer
    • Department of PhilosophyProgram in History and Philosophy of Science
    • Center for Population BiologyUniversity of California
Article

DOI: 10.1007/BF02426836

Cite this article as:
Griesemer, J.R. Biol Philos (1991) 6: 155. doi:10.1007/BF02426836

Abstract

Scientists use a variety of modes of representation in their work, but philosophers have studied mainly sentences expressing propositions. I ask whether diagrams are mere conveniences in expressing propositions or whether they are a distinct, ineliminable mode of representation in scientific texts. The case of path analysis, a statistical method for quantitatively assessing the relative degree of causal determination of variation as expressed in a causal path diagram, is discussed. Path analysis presents a worst case for arguments against eliminability since path diagrams are usually presumed to be mathematically or logically “equivalent” in an important sense to sets of linear path equations. I argue that path diagrams are strongly generative, i.e., that they add analytical power to path analysis beyond what is supplied by linear equations, and therefore that they are ineliminable in a strong scientific sense.

Key words

Path analysisregressionscientific diagramsSewall Wrightstatistics in biology

Copyright information

© Kluwer Academic Publishers 1991