An Inter-Rater Comparison of DoD Human Factors Analysis and Classification System (HFACS) and Human Factors Analysis and Classification System-Maritime (HFACS-M)
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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Human error has been identified as a factor in virtually every major maritime mishap over the past decade. The Department of Defense DoD currently employs the Human Factors Analysis and Classification System HFACS taxonomy to identify and quantify human error in major mishaps. HFACS divides errors into categories, sub-codes, and nano-codes. The generic nature of DoD HFACS raises the question of whether or not a domain-specific version for the surface Navy could be applied more consistently. Twentyeight subjects 14 Surface Warfare Officers SWOs and 14 non-SWOs employed either DoD HFACS or a developmental maritime domain specific version, HFACS-M, to classify findings in a National Transportation Safety Board NTSB maritime accident investigation. Fleiss Kappa was used to determine inter-rater reliability among subjects. The results of this study revealed that SWOs using HFACS-M had a higher inter-rater reliability 10.9, 7.3, and 6.5 at every classification level than non-SWOs. HFACSM itself was also shown to have a slightly higher overall inter-rater reliability 5.7, 7.4, and 3.6 than DoD HFACS. The research concluded that although HFACS-M performed well, further testing is necessary to validate it.
- Safety Engineering
- Human Factors Engineering and Man Machine Systems