Memory is Deceiving: a Typical Size Induces the Judgment Bias in the Ebbinghaus IIlusion

Amandine Eve ReyEMC Laboratory, Lyon 2 University
Benoit RiouEMC Laboratory, Lyon 2 University
Rémy VersaceEMC Laboratory, Lyon 2 University

Abstract

Grounded cognition theories state that conceptual knowledge is closely linked to the current situation and embodied in sensory dimensions. Alongside the interaction with the environment, knowledge related to our environment is continually recovered from memory. Thus, the perceptual situation is closely linked to the reactivated traces in memory. Visual illusions correspond to a situation in which the perceived image differs from the objective image. In order to explore the link between conceptual processes and perceptual processes, we used the Ebbinghaus illusion and replaced the perceptual size difference of the inducers by a typical size difference simulated in memory (animals with a typically large or small size were used as inducers). Results showed a bias in judgments of the size of the test elements even when the inducers did not have different physical sizes but only reactivated different sizes in memory.

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Memory is Deceiving: a Typical Size Induces the Judgment Bias in the Ebbinghaus IIlusion (1.2 MB)



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