TYPIST: a theory of performance in skilled typing

  • Authors:
  • Bonnie E. John

  • Affiliations:
  • School of Computer Science, Carnegie Mellon University, Pittsburgh, PA

  • Venue:
  • Human-Computer Interaction
  • Year:
  • 1996

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Abstract

TYPIST is a TheorY of Performance In Skilled Typing built within the framework of the Model Human Processor (MHP; Card, Moran, & Newell, 1983). As such, it can be used to make quantitative predictions of performance on typing tasks and can be integrated with other MHP-based models of performance. In this article, I present the theory and explain the source of each theoretical assumption (MHP, typing task analysis, or empirical typing data). I then demonstrate different ways to use TYPIST by applying it to six transcription typing tasks. Finally, I summarize its application to many more typing tasks that display robust behavioral phenomena identified by Salthouse (1986).