The Efficacy of Diagrams in Syllogistic Reasoning: A Case of Linear Diagrams
We study the efficacy of external diagrams in syllogistic reasoning, focusing on the effectiveness of a linear variant of Euler diagrams. We tested subjects’ performances in syllogistic reasoning tasks where linear diagrams were externally supplied. The results indicated that the linear diagrams work as effectively as Euler diagrams. It is argued that the relational information such as inclusion and exclusion is crucial for understanding the efficacy of diagrams in syllogistic reasoning.
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