Cited by 410Thermoregulation and physiological responsesEffects of Environmental Stressors on LivestockBuilding Energy and Comfort Optimization

A Meta-Analysis of Performance Response Under Thermal Stressors

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Hancock, P.A., Ross, Jennifer M., Szalma, James L.·2007·Human Factors: The Journal of the Human Factors and Ergonomics Society

Abstract

Objective: Quantify the effect of thermal stressors on human performance. Background: Most reviews of the effect of environmental stressors on human performance are qualitative. A quantitative review provides a stronger aid in advancing theory and practice. Method: Meta-analytic methods were applied to the available literature on thermal stressors and performance. A total of 291 references were collected. Forty-nine publications met the selection criteria, providing 528 effect sizes for analysis. Results: Analyses confirmed a substantial negative effect on performance associated with thermal stressors. The overall effect size for heat was comparable to that for cold. Cognitive performance was least affected by thermal stressors, whereas both psychomotor and perceptual task performance were degraded to a greater degree. Other variables were identified that moderated thermal effects. Conclusion: Results confirmed the importance of task type, exposure duration, and stressor intensity as key variables impacting how thermal conditions affect performance. Results were consistent with the theory that stress forces the individual to allocate attentional resources to appraise and cope with the threat, which reduces the capacity to process task-relevant information. This represents a maladaptive extension of the narrowing strategy, which acts to maintain stable levels of response when stress is first encountered. Application: These quantitative estimates can be used to design thermal tolerance limits for different task types. Although results indicate the necessity for further research on a variety of potentially influential factors such as acclimatization, the current summary provides effect size estimates that should be useful in respect to protecting individuals exposed to adverse thermal conditions.

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Registry

Crossref · 10.1518/001872007x230226

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Authors
Hancock, P. A., Ross, J. M., & Szalma, J. L.
Affiliations
University of Central Florida (US)
Corresponding author
Hancock, P.A.
Venue
Human Factors: The Journal of the Human Factors and Ergonomics Society
Published
2007-10
Volume
49
Issue
5
Pages
851-877
ISSN
  • 0018-7208 (ISSN-L)
  • 1547-8181
OpenAlex
W1967202115
Cited by
410
References
132
Citations by year
2026: 25 · 2025: 42 · 2024: 27 · 2023: 23 · 2022: 44 · 2021: 31 · 2020: 24 · 2019: 23 · 2018: 23 · 2017: 29 · 2016: 17 · 2015: 23 · 2014: 14 · 2013: 18 · 2012: 19
FWCI
0.71
Type
journal article
Language
en
Open access
Locations
  • Human Factors The Journal of the Human Factors and Ergonomics Society (publishedVersion)
  • PubMed (publishedVersion)
  • Journal of International Crisis and Risk Communication Research (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Effects of Environmental Stressors on Livestock
  • Physical Sciences › Engineering › Building and Construction › Building Energy and Comfort Optimization
Keywords
thermal stress (biology), human performance, heat stress, cold stress, cognitive performance, psychomotor performance, perceptual performance, attentional resources, exposure duration, stressor intensity, task type
MeSH terms
Cold Temperature, Environmental Exposure, Hot Temperature, Humans, Psychomotor Performance, Stress, Physiological

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