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arXiv · 1805.02399

Relating Eye-Tracking Measures With Changes In Knowledge on Search Tasks

Nilavra Bhattacharya·Jacek Gwizdka
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Abstract

We conducted an eye-tracking study where 30 participants performed searches on the web. We measured their topical knowledge before and after each task. Their eye-fixations were labelled as "reading" or "scanning". The series of reading fixations in a line, called "reading-sequences" were characterized by their length in pixels, fixation duration, and the number of fixations making up the sequence. We hypothesize that differences in knowledge-change of participants are reflected in their eye-tracking measures related to reading. Our results show that the participants with higher change in knowledge differ significantly in terms of their total reading-sequence-length, reading-sequence-duration, and number of reading fixations, when compared to participants with lower knowledge-change.

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Nilavra Bhattacharya, Jacek Gwizdka. 2018-05-07. Relating Eye-Tracking Measures With Changes In Knowledge on Search Tasks. https://doi.org/10.1145/3204493.3204579

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