European Journal for Philosophy of Science

, Volume 2, Issue 1, pp 111–118

A weaker condition for transitivity in probabilistic support

Original paper in Philosophy of Probability


Probabilistic support is not transitive. There are cases in which x probabilistically supports y, i.e., Pr(y | x) > Pr(y), y, in turn, probabilistically supports z, and yet it is not the case that x probabilistically supports z. Tomoji Shogenji, though, establishes a condition for transitivity in probabilistic support, that is, a condition such that, for any x, y, and z, if Pr(y | x) > Pr(y), Pr(z | y) > Pr(z), and the condition in question is satisfied, then Pr(z | x) > Pr(z). I argue for a second and weaker condition for transitivity in probabilistic support. This condition, or the principle involving it, makes it easier (than does the condition Shogenji provides) to establish claims of probabilistic support, and has the potential to play an important role in at least some areas of philosophy.


Probabilistic support Shogenji Transitivity 


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© Springer Science + Business Media B.V. 2011

Authors and Affiliations

  1. 1.Department of PhilosophyTexas Christian UniversityFort WorthUSA

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