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Measuring Mental Effort for Creating Mobile Data Collection Applications.

Johannes Schobel1,2, Thomas Probst3, Manfred Reichert2

  • 1Institute of Medical Systems Biology, Ulm University, 89069 Ulm, Germany.

International Journal of Environmental Research and Public Health
|March 7, 2020
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Summary

QuestionSys enables researchers to easily create mobile data collection tools, reducing effort and improving efficiency in mHealth and clinical trials. Novices gain proficiency quickly, demonstrating the system's practical value.

Keywords:
data collectionend-user programmingmental effortsmart mobile devicesusability study

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Area of Science:

  • Human-Computer Interaction
  • Health Informatics
  • Software Engineering

Background:

  • Paper-based data collection in mHealth presents significant drawbacks.
  • Existing systems often require extensive programming knowledge, limiting researcher accessibility.
  • Efficient data gathering is crucial for mobile health (mHealth) research.

Purpose of the Study:

  • To evaluate the mental effort and performance associated with configuring mobile data collection applications using the QuestionSys framework.
  • To assess the impact of user experience and prior knowledge on the usability of QuestionSys.
  • To validate the effectiveness of QuestionSys in enabling researchers with limited programming skills to create data collection instruments.

Main Methods:

  • A study involving 80 participants (novices and experts in process modeling) across two sessions.
  • Participants modeled 10 data collection instruments using QuestionSys.
  • Objective performance measures (time, errors) and self-reported mental effort were collected and analyzed.

Main Results:

  • A strong correlation was found between measured mental effort and performance metrics.
  • Self-reported mental effort significantly decreased over the study duration, positively impacting performance.
  • Novice users demonstrated a significant improvement in their ability to model data collection instruments.

Conclusions:

  • QuestionSys effectively reduces the mental effort required for configuring mobile data collection instruments.
  • The framework empowers researchers, including novices, to efficiently create data collection tools for mHealth and large-scale studies like clinical trials.
  • QuestionSys offers a practical solution for overcoming limitations of traditional data collection methods.