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User interface design in mobile learning applications: Developing and evaluating a questionnaire for measuring

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Researchers developed a new tool to measure extraneous cognitive load from mobile learning interfaces. This helps identify UI design issues that hinder learning, improving user experience and educational effectiveness.

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Area of Science:

  • Educational Technology
  • Human-Computer Interaction
  • Cognitive Psychology

Background:

  • Mobile learning offers flexibility but faces challenges like small screens and poor UI design, increasing extraneous cognitive load.
  • Extraneous cognitive load, unrelated to learning content, stems from UI complexity and negatively impacts learner focus.
  • Existing cognitive load measures are insufficient for assessing UI-specific extraneous load in mobile learning.

Purpose of the Study:

  • To develop and evaluate a subjective instrument for measuring extraneous cognitive load specifically related to mobile learning user interface (UI) design.
  • To provide a dedicated tool for identifying and quantifying UI design-induced extraneous cognitive load in mobile learning applications.
  • To guide UI improvements in mobile learning by understanding the relationship between UI design and extraneous cognitive load.

Main Methods:

  • Conducted pretesting with a small group to establish the instrument's foundation.
  • Performed pilot experiments to validate the instrument and refine procedures.
  • Utilized NASA-TLX scores to analyze the relationship between overall and extraneous cognitive load across UI criteria.

Main Results:

  • The study successfully developed and evaluated a subjective instrument for measuring extraneous cognitive load in mobile learning UI design.
  • Identified challenges such as participant fatigue and scale reliability, leading to instrument refinement (e.g., 10-point scale, reduced tasks).
  • Established the importance of UI design, distinct from content, as the primary driver of extraneous cognitive load.

Conclusions:

  • A dedicated instrument is crucial for accurately measuring UI design-induced extraneous cognitive load in mobile learning.
  • Reducing extraneous cognitive load through improved UI design is essential for enhancing learner focus and overall learning effectiveness.
  • The developed instrument can inform UI design decisions to improve usability and the learning experience in mobile educational applications.