Training to break the barriers of habit in reasoning about unusual faults.

Patrick, John, Grainger, Leigh, Gregov, Anna, Halliday, Polly, Handley, Jim, James, Nic ORCID: https://orcid.org/0000-0002-4181-9501 and O'Reilly, Sinead (1999) Training to break the barriers of habit in reasoning about unusual faults. Journal of Experimental Psychology: Applied, 5 (3) . pp. 314-335. ISSN 1076-898X [Article]

Abstract

Two studies of experienced operators in a process-control plant aimed to improve diagnosis of unusual multiple faults through training. A process-tracing methodology analyzed operators' concurrent verbalizations and actions during simulated fault scenarios. In Study 1, training increased awareness of multiple faults and provided a heuristic for switching to a representation that included multiple-fault hypotheses. Training had no effect on diagnostic accuracy, although fewer incorrect single-fault hypotheses were regenerated. In Study 2, operators practiced identifying the inconsistencies between a single-fault hypothesis and fault symptoms and modifying this hypothesis into a consistent multiple-fault hypothesis. Training improved diagnostic accuracy because of improved hypothesis modification processes.

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