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The creation of a new minor event coding system

Davies, John B. and Wallace, Brendan and Ross, Alastair and Wright, L. and White, M. (2002) The creation of a new minor event coding system. Cognition, Technology and Work, 4 (1). pp. 1-8. ISSN 1435-5558

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The present study began with an assessment of the reliability and usefulness of an existing minor event coding system in a British 'high-consequence' industry. It was discovered that despite the fact that the system produced replicable data, when tested in a reliability trial the causal inferences it was producing failed to meet the normal criteria for statistical reliability. It was therefore felt necessary to create a new model of the human factors component of action in this industry, from which a model of human factors error in the same industry could be inferred. A set of codes (to facilitate statistical analysis) were deduced from this last, which were then tested in a new reliability trial. The results from this trial were very encouraging, and after a six-month pilot study in which it demonstrated its usefulness as a trend and patterning tool, the system is now being phased in within this industry.