naa a22 4500 510776698 CHVBK 20180411083232.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.3758/s13428-012-0301-2 doi (NATIONALLICENCE)springer-10.3758/s13428-012-0301-2 Investigating eye movement acquisition and analysis technologies as a causal factor in differential prevalence of crossed and uncrossed fixation disparity during reading and dot scanning [Elektronische Daten] [J. Kirkby, H. Blythe, D. Drieghe, V. Benson, S. Liversedge] Previous studies examining binocular coordination during reading have reported conflicting results in terms of the nature of disparity (e.g. Kliegl, Nuthmann, & Engbert (Journal of Experimental Psychology General 135:12-35, 2006); Liversedge, White, Findlay, & Rayner (Vision Research 46:2363-2374, 2006). One potential cause of this inconsistency is differences in acquisition devices and associated analysis technologies. We tested this by directly comparing binocular eye movement recordings made using SR Research EyeLink 1000 and the Fourward Technologies Inc. DPI binocular eye-tracking systems. Participants read sentences or scanned horizontal rows of dot strings; for each participant, half the data were recorded with the EyeLink, and the other half with the DPIs. The viewing conditions in both testing laboratories were set to be very similar. Monocular calibrations were used. The majority of fixations recorded using either system were aligned, although data from the EyeLink system showed greater disparity magnitudes. Critically, for unaligned fixations, the data from both systems showed a majority of uncrossed fixations. These results suggest that variability in previous reports of binocular fixation alignment is attributable to the specific viewing conditions associated with a particular experiment (variables such as luminance and viewing distance), rather than acquisition and analysis software and hardware. Psychonomic Society, Inc., 2013 Binocular coordination nationallicence Eye movements nationallicence Reading and nonreading tasks nationallicence Kirkby J. Department of Psychology, Bournemouth University, Talbot Campus, Fern Barrow, BH12 5BB, Poole, UK aut Blythe H. Psychology, University of Southampton, Southampton, UK aut Drieghe D. Psychology, University of Southampton, Southampton, UK aut Benson V. Psychology, University of Southampton, Southampton, UK aut Liversedge S. Psychology, University of Southampton, Southampton, UK aut Behavior Research Methods Springer US; http://www.springer-ny.com 45/3(2013-09-01), 664-678 45:3<664 2013 45 13428 https://doi.org/10.3758/s13428-012-0301-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3758/s13428-012-0301-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kirkby J. Department of Psychology, Bournemouth University, Talbot Campus, Fern Barrow, BH12 5BB, Poole, UK aut NATIONALLICENCE 700 1- Blythe H. Psychology, University of Southampton, Southampton, UK aut NATIONALLICENCE 700 1- Drieghe D. Psychology, University of Southampton, Southampton, UK aut NATIONALLICENCE 700 1- Benson V. Psychology, University of Southampton, Southampton, UK aut NATIONALLICENCE 700 1- Liversedge S. Psychology, University of Southampton, Southampton, UK aut NATIONALLICENCE 773 0- Behavior Research Methods Springer US; http://www.springer-ny.com 45/3(2013-09-01), 664-678 45:3<664 2013 45 13428 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer