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Audrey L Michal1, David Uttal2, Priti Shah3

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Understanding how people read graphs is key. Eye tracking reveals that matching verbal question order to graph inspection speeds up comprehension, especially for older children and adults.

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Area of Science:

  • Cognitive Psychology
  • Information Visualization
  • Human-Computer Interaction

Background:

  • Extracting relational information from visualizations (graphs) and aligning it with textual descriptions is a complex cognitive task.
  • Previous research has not fully elucidated the optimal visual search strategies for verifying relational statements against graphical data.

Purpose of the Study:

  • To investigate the eye movement patterns used by individuals to link relational statements with graphical representations.
  • To determine the most effective strategy for understanding graph-user interactions and improving data visualization comprehension.

Main Methods:

  • Utilized eye tracking technology to record participants' gaze patterns while they compared relational statements with simple graphs.
  • Included diverse age groups: college students, 8-year-olds, and 6-year-olds.
  • Analyzed two primary visual search strategies: following question-verbal order and a left-first bias.

Main Results:

  • Eye movement patterns that mimicked the verbal order of the question (e.g., inspecting 'blueberries' first in 'more blueberries than oranges') resulted in significantly faster response times.
  • A left-first bias strategy, where participants looked at the left-most element regardless of the question, led to slower responses.
  • The prevalence of the question-order strategy increased with age, indicating a developmental component.

Conclusions:

  • The optimal strategy for verifying verbal-visual relational consistency involves eye movements mirroring the verbal order of the query.
  • This efficient strategy requires significant executive control and language-vision coordination.
  • Findings have implications for designing more intuitive visualizations and educational tools for graph comprehension across different age groups.