Original Article


, 75:183

First online:

Verisimilitude and Belief Change for Conjunctive Theories

  • Gustavo CevolaniAffiliated withDepartment of Philosophy, University of Bologna Email author 
  • , Vincenzo CrupiAffiliated withCenter for Mathematical Philosophy, Ludwig Maximilian University
  • , Roberto FestaAffiliated withDepartment of Philosophy, University of Trieste

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Theory change is a central concern in contemporary epistemology and philosophy of science. In this paper, we investigate the relationships between two ongoing research programs providing formal treatments of theory change: the (post-Popperian) approach to verisimilitude and the AGM theory of belief change. We show that appropriately construed accounts emerging from those two lines of epistemological research do yield convergences relative to a specified kind of theories, here labeled “conjunctive”. In this domain, a set of plausible conditions are identified which demonstrably capture the verisimilitudinarian effectiveness of AGM belief change, i.e., its effectiveness in tracking truth approximation. We conclude by indicating some further developments and open issues arising from our results.