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Updated: Jun 14, 2026

Errors as a Means of Reducing Impulsive Food Choice
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Reducing number entry errors: solving a widespread, serious problem.

Harold Thimbleby1, Paul Cairns

  • 1Future Interaction Technology Laboratory, Swansea University, Swansea SA2 8PP, UK. harold@thimbleby.net

Journal of the Royal Society, Interface
|April 9, 2010
PubMed
Summary
This summary is machine-generated.

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Numeric errors, like "out by 10" mistakes, are common in many fields. Better user interface design can significantly reduce these data entry errors, improving system reliability.

Area of Science:

  • Human-Computer Interaction
  • Data Integrity
  • Usability Engineering

Background:

  • Number entry is critical across diverse sectors including science, healthcare, and finance.
  • Existing systems often lack robust mechanisms for detecting or managing common numeric errors.
  • Errors like 'out by 10' can have severe consequences, particularly in safety-critical applications.

Purpose of the Study:

  • To investigate the prevalence and impact of numeric entry errors in various systems.
  • To analyze methods for improving error management in numerical data input.
  • To demonstrate a practical approach for reducing specific types of numeric errors.

Main Methods:

  • Analysis of numeric error types, focusing on 'out by 10' errors.
  • Evaluation of user interface design principles for error prevention.

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  • Development and demonstration of a prototype user interface.

    • Main Results:

    • Identified widespread issues with numeric error handling across numerous systems.
    • Showed that improved user interface design can reduce 'out by 10' error probability by approximately 50%.
    • Validated the practicality of the proposed error management approach through a demonstration.

    Conclusions:

    • Numeric entry errors pose a significant, often unaddressed, risk in many applications.
    • User interface design is a powerful tool for mitigating common data entry mistakes.
    • Implementing better error management strategies enhances data accuracy and system safety.