A generalized inclusion (g.i.) frame consists of a set of points (or "worlds") W and an assignment of a binary relation Rw on W to each point w in W. generalized inclusion frames whose Rw are partial orders are called comparison frames. Conditional logics of various comparative notions, for example, Lewis's V-logic of comparative possibility and utilitarian accounts of conditional obligation, model the dyadic modal operator > on comparison frames according to (what amounts to) the following truth condition: oc>13"holds at w" if every point in the truth set of a bears Rw to some point where holds. In this essay I provide a relational frame theory which embraces both accessibility semantics and g.i. semantics as special cases. This goal is achieved via a philosophically significant generalization of universal strict implication which does not assume accessibility as a primitive. Within this very general setting, I provide the first axiomatization of the dyadic modal logic corresponding to the class of all g.i. frames. Various correspondences between dyadic logics and first order definable subclasses of the class of g.i. frames are established. Finally, some general model constructions are developed which allow uniform completeness proofs for important sublogics of Lewis' V.

The roles of independent and correlated properties in real world object concepts were explored. Property norms were collected for 190 natural kinds and artifacts. The norms were used to design behavioral experiments and computational models of concept similarity. Property intercorrelations influenced performance in property verification. Concept similarity, as measured by overlap of independent properties, predicted similarity ratings, speeded same/different category decision latency, and short interval priming latency. Concept similarity, as measured by overlap of correlated properties, predicted same/different category decision latency and short interval priming for natural kinds. It was concluded that people encode knowledge about independent and correlated properties of real-world objects. The influence of property intercorrelations is stronger for natural kinds because natural kinds contain a higher proportion of correlated properties. In the investigation of short interval semantic priming, results suggested that semantic relatedness can be defined in terms of property overlap between concepts.

Despite the shift from dualism to materialism, philosophy of mind and cognitive science still face the challenge of explaining the interaction of the physical and the mental. The language of thought hypothesis, combined with advances in computing offers a promising explanation of the aforementioned interaction by capitalizing on the parallels between the syntax and semantics of language. Unfortunately, the language of thought hypothesis is vulnerable to arguments and objections that stem from syntactic ambiguity, semantic poverty, and semantic causation, all of which stand in the way of creating a working theory of mind. I will claim that these problems can be avoided by incorporating feedback to regulate the semantic content in chains of thoughts. The regulation of semantic content would allow the operations performed by the psychological machinery responsible for the process of thinking to be causally sensitive to the semantic content of thoughts. The causal influence of the feedback would be heuristic, rather than algorithmic, avoiding the explanatory pitfalls traditionally encountered in attempts to integrate semantic content into strict, syntax manipulating mechanisms. The inclusion of consciousness feedback also answers a solipsistic worry, the syntactic zombie, as well as fitting more closely with our experience of cognition.

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Cuaderno de trabajo para el curso Estadística Inferencial en las modalidades presencial y online, que corresponde al ciclo 2014-2.

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