Binocular coordination of the eyes during reading: word frequency and case alternation affect fixation duration but not fixation disparity

Juhasz, Barbara.J., Liversedge, Simon Paul orcid iconORCID: 0000-0002-8579-8546, White, Sarah.J. and Rayner, Keith. (2006) Binocular coordination of the eyes during reading: word frequency and case alternation affect fixation duration but not fixation disparity. Quarterly Journal Of Experimental Psychology Section A - Human Experimental Psychology, 59 (9). pp. 1614-1625. ISSN 1747-0218

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Official URL: https://doi.org/10.1080%2F17470210500497722

Abstract

This experiment investigated whether properties of the text being read affect binocular coordination of the eyes during reading. Readers' binocular eye movements were recorded while they read sentences that contained high- and low-frequency words. In addition, half of the sentences were presented in normal case, and half were presented in alternating case (i.e., AlTeRnAtInG cAsE). Past research has suggested that the visual system tolerates less binocular fixation disparity with alternating than with normal case (Heller & Radach, 1999). While both word frequency and alternating case produced large effects on fixation durations on the target word, neither manipulation affected the magnitude of fixation disparity. It is concluded that linguistic and visual properties of the text being read do not influence binocular coordination of the eyes during reading. Additional analyses also showed no difference in fixation disparity between reading and a nonlinguistic task. Implications of these results for split-fovea models of reading are discussed.


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