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Using APEX to Model Anticipated Human Error: Analysis of a GPS Navigational AidThe interface development process can be dramatically improved by predicting design facilitated human error at an early stage in the design process. The approach we advocate is to SIMULATE the behavior of a human agent carrying out tasks with a well-specified user interface, ANALYZE the simulation for instances of human error, and then REFINE the interface or protocol to minimize predicted error. This approach, incorporated into the APEX modeling architecture, differs from past approaches to human simulation in Its emphasis on error rather than e.g. learning rate or speed of response. The APEX model consists of two major components: (1) a powerful action selection component capable of simulating behavior in complex, multiple-task environments; and (2) a resource architecture which constrains cognitive, perceptual, and motor capabilities to within empirically demonstrated limits. The model mimics human errors arising from interactions between limited human resources and elements of the computer interface whose design falls to anticipate those limits. We analyze the design of a hand-held Global Positioning System (GPS) device used for radical and navigational decisions in small yacht recalls. The analysis demonstrates how human system modeling can be an effective design aid, helping to accelerate the process of refining a product (or procedure).
Document ID
Document Type
Conference Paper
VanSelst, Mark
(NASA Ames Research Center Moffett Field, CA United States)
Freed, Michael
(NASA Ames Research Center Moffett Field, CA United States)
Shefto, Michael
Date Acquired
August 20, 2013
Publication Date
January 1, 1997
Subject Category
Aircraft Communications And Navigation
Meeting Information
HCT International 1997 7th Annual International Conference(Pasadena, CA)
Funding Number(s)
PROJECT: RTOP 538-04-23
Distribution Limits
Work of the US Gov. Public Use Permitted.

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