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Human Factors: The Journal of the Human Factors and Ergonomics Society
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Minimal Instrumentation May Compromise Failure Diagnosis With an Ecological Interface

Dal Vernon C. Reising

University of Illinois at Urbana-Champaign, Urbana, Illinois

Penelope M. Sanderson

University of Queensland, Brisbane, Australia

Interfaces designed according to ecological interface design (EID) display higher-order relations and properties of a work domain so that adaptive operator problem solving can be better supported under unanticipated system conditions. Previous empirical studies of EID have assumed that the raw data required to derive and communicate higher-order information would be available and reliable. The present research examines the relative advantages of an EID interface over a conventional piping-and-instrumentation diagram (PID) when instrumentation is maximally or only minimally adequate. Results show an interaction between interface and the adequacy of the instrumentation. Failure diagnosis performance with the EID interface with maximally adequate instrumentation is best overall. Performance with the EID interface drops more drastically from maximally to minimally adequate instrumentation than does performance with the PID interface, to the point where the EID interface with minimally adequate instrumentation supports nonsignificantly worse performance than does the equivalent PID interface. Actual or potential applications of this research include design of instrumentation and displays for complex industrial processes.

Human Factors: The Journal of the Human Factors and Ergonomics Society, Vol. 46, No. 2, 316-333 (2004)
DOI: 10.1518/hfes.46.2.316.37338
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