The Double Disjunction Task as a Coordination Problem (original) (raw)

In this paper I present the double disjunction task as introduced by Johnson-Laird. This experiment is meant to show how mental model theory explains the discrepancy between logical competence and logical performance of individuals in deductive reasoning. I review the results of the task and identify three problems in the way the task is designed, that all fall under a lack of coordination between the subject and the experimenter, and an insufficient representation of the semantic/pragmatic interface. I then propose a reformulation of the task, that makes explicit the underlying semantic reasoning and emphasizes the difference of interpretation of the ddt between the experimenter and the subjects.

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