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Where scrollbars are clicked, and why.

Oliver Herbort1, Philipp Raßbach2, Wilfried Kunde2

  • 1Department of Psychology, University of Würzburg, Röntgenring 11, 97070, Würzburg, Germany. oliver.herbort@uni-wuerzburg.de.

Cognitive Research: Principles and Implications
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PubMed
Summary
This summary is machine-generated.

Users

Keywords:
Action planningAnticipationHuman–computer interactionScrolling

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Area of Science:

  • Human-Computer Interaction
  • Cognitive Psychology
  • Usability Studies

Background:

  • Scrolling is a fundamental interaction method for navigating visual displays.
  • Understanding user scrolling behavior can reveal inefficiencies and infer user intent.
  • Current models may not fully capture the nuances of scrollbar interaction.

Purpose of the Study:

  • To investigate how users position clicks on a scrollbar based on their intended scrolling action.
  • To determine the factors influencing scrollbar click-position selection.
  • To compare user scrollbar interaction with physical device manipulation heuristics.

Main Methods:

  • Conducted two online experiments to systematically record scrollbar click positions.
  • Analyzed click positions in relation to intended scrolling actions and contextual factors.
  • Evaluated potential explanations for click-position selection, including cursor distance, memory load, and motor-cognitive factors.

Main Results:

  • Scrollbar click positions were not solely optimized for cursor travel distance or cognitive load.
  • Click positions varied significantly based on the immediate context and prior scrolling actions.
  • Observed user behavior aligns with simple heuristics used in planning movements for physical devices.

Conclusions:

  • User scrollbar interaction follows context-dependent heuristics, not just optimization principles.
  • This behavior resembles physical device manipulation, suggesting a unified movement planning approach.
  • Findings can enhance human-computer interaction models and improve prediction of user behavior during scrolling.