As is well known, in conditionals and, more generally, in structures involving adverbs of quantification, indefinite NPs like a cat display a variable quantificational force. Within DRT this phenomenon is analyzed by assimilating indefinites to variables. Unlike other variable-like elements, however, indefinites cannot be anaphoric to some thing else. That is, one cannot say things like "a cat ...

Drawing on fifteen video-recorded planning meetings as data, and conversation analysis a method, I examine the interactional import of common Finnish practice constructing proposal thought. As point departure, consider two different types conditional utterances in which speaker presents plan: (1) ‘asking conditionals’ ( jos ‘what if’ prefaced declarative conditionals interrogative conditionals)...

On the basis of impossibility results on probability, belief revision, and conditionals, it is argued that conditional beliefs differ from beliefs in conditionals qua mental states. Once this is established, it will be pointed out in which sense conditional beliefs are still conditional, even though they may lack conditional contents, and why it is permissible to still regard them as beliefs, a...

We argue that distinct conditionals—conditionals that are governed by different logics—are needed to formalize the rules of Truth Introduction and Truth Elimination. We show that revision theory, when enriched with the new conditionals, yields an attractive theory of truth. We go on to compare this theory with one recently proposed by Hartry Field.

We report research investigating the role of mental models in deduction. The first study deals with conjunctive inferences (from one conjunction and two conditional premises) and disjunctive inferences (from one disjunction and the same two conditionals). The second study examines reasoning from multiple conditionals such as: If e then b; If a then b; If b then c; What follows between a and c? ...