Kahneman and Tversky's critique of Cohen's position on adults' probability reasoning is not valid. If they think Baconian logic is normatively unsound, the onus is on them to explain why. It is valid and useful because nature itself is full of causal processes. (Author/RD)

Three experiments examined strategies for solving suppositional deductions to compare control structures proposed by rule theory and model theory. Puzzles were based on assertors who may be truth-tellers and their assertions about their truth-telling status. Reasoners made backward and forward inferences, found generating suppositions difficult,…

Children and undergraduate students were studied to expose "structure-neutral" interpretations of logical propositions involving universal affirmatives. Successes with true and false questions and with four different syllogistic forms having three content types were compared. Age-related differences in performance were discussed with…

Argues that the syntactic and mental model accounts of the suppression effect in deductive reasoning are inadequate. Proposes a relative salience model. Describes a test of predictions from this model in a suppression model, which obtained evidence of convergent validity for the salience construct. Results could not be reconciled with either the…

Three experiments using university students explored what constitutes an event and what determines its boundaries. Results supported the hypothesis that sequences of stimuli repeating in different contexts are cut out to become cognitive entities ("things" with a beginning and an end) in their own right. Results suggest that the…