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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Computer work duration and its dependence on the used pause definition.

Janneke M Richter1, Harm P Slijper, Eelco A B Over

  • 1Department of Neuroscience, Erasmus MC Rotterdam, Dr. Molewaterplein 50, P.O. Box 2040, NL-3000 CA Rotterdam, The Netherlands. j.richter@erasmusmc.nl

Applied Ergonomics
|January 8, 2008
PubMed
Summary
This summary is machine-generated.

The way computer pause time is defined significantly impacts estimated computer work duration. Understanding this relationship helps improve ergonomic software and study comparisons for accurate work duration assessment.

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Area of Science:

  • Ergonomics
  • Human-Computer Interaction
  • Occupational Health

Background:

  • Ergonomic studies often estimate computer work duration using registration software.
  • These estimations rely on an arbitrary pause definition (Pd) to determine breaks.
  • Varying Pds can lead to inconsistent and potentially misclassified computer work duration (PWT).

Purpose of the Study:

  • To investigate the relationship between pause definition (Pd) and estimated computer work duration (PWT).
  • To identify how user characteristics and work patterns influence this relationship.
  • To provide data for more accurate software design and comparative ergonomic studies.

Main Methods:

  • Utilized registration software to collect computer usage data from 571 users over approximately 60,000 working days.
  • Analyzed computer work duration (PWT) across a wide range of pause definitions (Pds) from 1 to 120 seconds.
  • Applied statistical modeling, including log-linear and second-order functions, to describe the observed relationships.

Main Results:

  • A shallow, log-linear relationship was identified between PWT and Pd across various pause definitions.
  • For keyboard and mouse usage, a second-order function provided the best fit for the data.
  • The observed relationships were found to be dependent on the total amount of computer work and individual user characteristics.

Conclusions:

  • The choice of pause definition critically affects computer work duration estimates, necessitating careful consideration in research.
  • The identified relationships can inform the design of ergonomic software for more accurate work duration assessment.
  • Comparisons between studies using different pause definitions require an understanding of these influencing factors to avoid misclassification.