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Related Experiment Videos

Route choices, anticipated forgetting, and interface design for on-line reference documents.

P Wright1, A Lickorish, R Milroy

  • 1Medical Research Council, Applied Psychology Unit, Cambridge, England. wrightp1@cardiff.ac.uk

Journal of Experimental Psychology. Applied
|August 11, 2000
PubMed
Summary

Users often avoid easier navigation routes if interface design cues suggest effort, impacting usability. Interface design must consider cognitive effort to guide users toward optimal choices.

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Area of Science:

  • Human-Computer Interaction
  • Cognitive Psychology
  • Usability Engineering

Background:

  • Usability and user preference are not always aligned, especially when users anticipate cognitive effort.
  • Understanding factors influencing navigation choices is crucial for effective interface design.

Purpose of the Study:

  • To investigate how interface design elements influence user choices between navigation routes with varying cognitive difficulty.
  • To determine the correlation between perceived effort, visual salience, and actual navigation path selection.

Main Methods:

  • Two experiments were conducted using an online price catalog with two navigation routes.
  • The harder route remained constant, while the easier route's interface features were manipulated.
  • User choices, reliance on supplementary tools (like an online notebook), and interface elements were recorded.

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Main Results:

  • Users preferred the easier route when visually salient (82% of trials) but opted for the harder route when it was in the active window.
  • When visual factors were equated, choosing the easier route decreased significantly if it required an extra activation click.
  • Navigating the harder route led to increased use of an online notebook, indicating anticipation of forgetting information.

Conclusions:

  • User choices are influenced by anticipated cognitive effort, which can override simple usability.
  • Interface design elements, such as visual salience and interaction costs (e.g., extra clicks), significantly impact navigation choices.
  • Usability evaluations must incorporate the study of choice behavior and anticipated effort, not just task completion efficiency.