# CognitionWorkshop **Abstract:** s -- Invited talks Johan van Benthem (logic – University of Amsterdam): Opening David Over (psychology – Durham): “New paradigm psychology of conditionals” There is a new probabilistic, Bayesian paradigm in the psychology of reasoning, with new psychological accounts of the indicative conditional of natural language and conditional reasoning. This new paradigm is greatly supported by experimental results showing that people judge the probability of the indicative conditional, P(if A then B), to be the conditional probability, P(B|A). The experimental support for this conclusion will be described, and an explanation given of how the resulting psychological accounts of the conditional are related to normative theories in philosophical logic, going back to Ramsey and de Finetti. The question will be raised of what the psychological findings and accounts might in turn imply about normative theories. Michiel van Lambalgen (logic and philosophy – University of Amsterdam): “Logical form in cognitive processes: causal inference in infants” This talk is concerned with infants' (3 - 30 months) understanding of causality, continuity and inertia, and the role played by inference. While some authors, following Michotte (1962), have argued that causal judgements are based entirely on perceptual cues (e.g. contact), there is now a body of evidence (summarized in Saxe and Carey 2006) that shows that inference plays a role as well, for example inferences based on the dispositional character (