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Steps toward building mathematical and computer models from cognitive task analyses.

Richard Schweickert1, Donald L Fisher, Robert W Proctor

  • 1Department of Psychological Sciences, Purdue University, West Lafayette, Indiana 47907-1364, USA. swike@psych.purdue.edu

Human Factors
|August 15, 2003
PubMed
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Developing computer models for human operator tasks is simplified with a new cognitive task analysis technique. This method aids in estimating task completion times for better system design and human-computer interaction.

Area of Science:

  • Cognitive Science
  • Human Factors Engineering
  • Computer Simulation

Background:

  • Developing quantitative computer models of human operators is challenging.
  • Existing methods for modeling real-world tasks are often complex and difficult to implement.

Purpose of the Study:

  • To propose a simplified technique for developing computer simulation models of human operators.
  • To enable easier approximation of task completion times for optimizing system design.

Main Methods:

  • Conduct a cognitive task analysis.
  • Construct an activity network or order-of-processing diagram.
  • Determine activity durations via literature or multidimensional scaling.
  • Develop equations or programs for time calculation/simulation.

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Main Results:

  • Demonstrated feasibility of using multidimensional scaling for activity duration approximation.
  • Illustrated the approach with telephone operator and driver message display tasks.
  • Developed models useful for optimizing system design and understanding human performance.

Conclusions:

  • The proposed technique facilitates the development of quantitative models for human operator tasks.
  • This approach aids in estimating task completion times and can be applied to system design and human-computer interaction.
  • Further analysis of response times can provide detailed insights into mental processes.