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Perceptual event boundaries cause mnemonic trade-offs between temporal order memory and source Memory: The role of
Rui Xiang1, Weitao Zhang1, Yuanyuan Niu2
1School of Psychology, Shandong Normal University, China, 250358.
Abstract:
The current study investigated how semantic relatedness among items influenced mnemonic trade-offs between temporal order memory and source memory caused by perceptual event boundaries in two experiments. We used background color shifts as perceptual boundaries and respectively manipulated object images as semantically related or random (Exp1) and switched synchronously or asynchronously between perceptual boundaries and semantic relatedness shifts (Exp2). The outcomes showed that semantic relatedness among items did not eliminate, or influence mnemonic trade-offs caused by perceptual event boundaries. The effects of perceptual event boundaries on integration and separation among items in episodic memory were significantly more pronounced than that of semantic relatedness changes. Furthermore, synchronous switch between perceptual boundaries and semantic relatedness shifts enhanced the items-source memory performance. These findings underscore the impact of semantic relationship among items in an event structure on memory organization, supporting and extending the predictions of the Context Maintenance and Retrieval model.
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