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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.
Parafoveal Load of Word N+1 Modulates Preprocessing Effectivenessof Word N+2 in Chinese Reading
(2010)
Preview benefits (PBs) from two words to the right of the fixated one (i.e., word N+2)and associated parafoveal-on-foveal effects are critical for proposals of distributed lexical processing during reading. This experiment examined parafoveal processing during reading of Chinese sentences, using a boundary manipulation of N+2-word preview with low- and high-frequency words N+1. The main findings were (a) an identity PB for word N+2 that was (b) primarily observed when word N+1 was of high frequency (i.e., an interaction between frequency of word N+1 and PB for word N+2), and (c) a parafoveal-on-foveal frequency effect of word N+1 for fixation durations on word N. We discuss implications for theories of serial attention shifts and parallel distributed processing of words during reading.