Logo Logo
Help
Contact
Switch Language to German
Francis, Gregory; Cummins, Benjamin; Kim, Jiyoon; Grzeczkowski, Lukasz ORCID: 0000-0002-7658-1900; Thunell, Evelina (August 2019): The moon size illusion does not improve perceptual judgments. In: Consciousness and Cognition, Vol. 73, 102754
Full text not available from 'Open Access LMU'.

Abstract

Recent studies suggest that the accuracy of perceptual judgments can be influenced by the perceived illusory size of a stimulus, with judgments being more accurate for increased illusory size. This phenomenon seems consistent with recent neuroscientific findings that representations in early visual areas reflect the perceived (illusory) size of stimuli rather than the physical size. We further explored this idea with the moon illusion, in which the moon appears larger when it is close to the horizon and smaller when it is higher in the sky. Participants (n = 230) adjusted the orientation of an image of the moon on a smartphone to match the perceived orientation of the moon in the sky. Contrary to previous studies that investigated accuracy and size illusions, we found slightly lower perceptual judgment accuracy when the moon appeared large (close to the horizon) compared to when it appeared small (high in the sky).