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.
@article{arxiv.1805.02399,
title = {Relating Eye-Tracking Measures With Changes In Knowledge on Search Tasks},
author = {Nilavra Bhattacharya and Jacek Gwizdka},
journal= {arXiv preprint arXiv:1805.02399},
year = {2019}
}
Comments
ACM Symposium on Eye Tracking Research and Applications (ETRA), June 14-17, 2018, Warsaw, Poland