Readability Analysis of Textual Content Using Eye Tracking

  • Aniruddha SinhaEmail author
  • Rikayan Chaki
  • Bikram De Kumar
  • Sanjoy Kumar Saha
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 897)


Characterization of silent reading involves a joint analysis of the reading material and reader’s capacity to assimilate the content. The amount of mental workload, to understand a content, reflects the overall cognitive load which is commonly measured using electrophysiological signals. Eye movement provides a direct means of evaluating one’s reading characteristics in much finer details. In this paper, we use a commercially available low-cost eye-tracking device, EyeTribe. We analyze the eye movement behavior to compare readability of textual contents and also characterize an individual’s reading profile. The experiment is performed using two types of textual contents significantly separated in difficulty level as evaluated using standard readability indices. The Flesch-Kincaid Grade Level for one type varies between 3 and 6 and the other between 13 and 16. Eye gaze analysis is done on features related to fixation and saccade using both global and local features. Results indicate the difference in content is reflected in global features and individual level variations, for a given type of content, are observed in the entropy derived from local features.


Readability analysis Eye gaze Fixation Entropy Learning 



The authors would like to thank the participants for their cooperation during the experiment and providing the data for the analysis. The data is anonymized for the processing and informed consent was taken from the participants. The data collection protocol followed Helsinki Human Research guidelines (


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Aniruddha Sinha
    • 1
    Email author
  • Rikayan Chaki
    • 2
  • Bikram De Kumar
    • 2
  • Sanjoy Kumar Saha
    • 2
  1. 1.TCS Research & InnovationTata Consultancy ServicesKolkataIndia
  2. 2.Department of Computer Science & EngineeringJadavpur UniversityKolkataIndia

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