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Title:
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COGNITIVE CHUNKS EXTRACTED FROM EYE-TRACKING RECORDS OF WEB PAGE READERS, USING ISOLATED SACCADES AS A DELIMITER |
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Author(s):
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Noriyuki Matsuda, Haruhiko Takeuchi |
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ISBN:
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978-972-8939-52-6 |
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Editors:
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Katherine Blashki |
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Year:
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2011 |
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Edition:
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Single |
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Keywords:
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Eye-tracking, fixations, saccades, chunking, loops |
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Type:
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Full Paper |
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First Page:
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169 |
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Last Page:
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176 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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Few previous eye-tracking studies incorporated the psychological notion of chunking, a meaningful cognitive unit of information. In the present work, we constructed fixation sequence lists nesting chunks, using isolated saccades as a delimiter. Chunks were extracted from the time-stamped records of the fixation sequences that were coded according to the 5x5 segments imposed on the display. The overwhelming majority chunks consisted of one or two fixations. Most within-chunk distances were zero or one, while the between-chunk distance was relatively dispersed with the modal distance at one, followed by zero. There was good agreement between the rankings of between- and within-chunk loops among the primary and secondary segments on the total number of loops. We found some indications about the layout effect, possible attributable to the presence of sub-area on the right most segments. |
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