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Prioritizing heat stress indices for cognitive performance assessment using a Fuzzy Delphi–FAHP framework - Nature

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We’re sharing this article early to provide faster access to peer-reviewed, accepted research. It is citable and carries a permanent DOI. This version is subject to further edits and will be replaced automatically by the final Version of Record. All legal disclaimers apply.

AbstractOccupational heat exposure induces physiological strain and can impair cognitive performance, exacerbating occupational error and accident risks. Although numerous heat stress indices exist, their theoretical and practical suitability for cognitive-related assessments remains ambiguous. This study established a structured multicriteria decision-making framework integrating the Fuzzy Delphi Method (FDM) and Fuzzy Analytic Hierarchy Process (FAHP) to prioritize candidate heat stress indices for occupational cognitive risk evaluation. Candidate indices and screening criteria identified via literature review and expert consensus (\(n=25\)) were evaluated using FDM, followed by FAHP with Chang’s extent analysis to derive criteria weights and overall index priorities. A one-at-a-time \(+10\%\) sensitivity analysis was performed to verify model stability.

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