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ABSTRACT
The present study explores the perceptual span, that is, the physical extent of the area from which useful visual information is obtained during a single fixation, during oral reading of Chinese sentences. Characters outside a window of legible text were replaced by visually similar characters. Results show that the influence of window size on the perceptual span was consistent across different fixation and oculomotor measures. To maintain normal reading behavior when reading aloud, it was necessary to have information provided from three characters to the right of the fixation. Together with findings from previous research, our findings suggest that the physical size of the perceptual span is smaller when reading aloud than in silent reading. This is in agreement with previous studies in English, suggesting that the mechanisms causing the reduced span in oral reading have a common base that generalizes across languages and writing systems.
Acknowledgments
We thank Jess Nixon for her helpful comments.
Funding
This research was funded by Deutsche Forschungsgemeinschaft Grants LA 2884/2-1 and KL 955/18. Data and R scripts used in this article are available at the Potsdam Mind Research Repository (http://read.psych.uni-potsdam.de/PMR2/).