Effects of heat stress on cognitive performance: the current state of knowledge

By P. Hancock, Ioannis Vasmatzidis. International Journal of Hyperthermia, 2003

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A Meta-Analysis of Performance Response Under Thermal Stressors (2007, background): “It is likely, however, that task type interacts with other moderators – particularly exposure duration and intensity – in influencing both the magnitude and direction of the effect of thermal stressors (Hancock & Vasmatzidis, 2003; Pilcher et al., 2002).”
Sensory displeasure reduces complex cognitive performance in the heat (2012, background): “…discrepancies between studies in the intensity and duration of heat exposure, previous reviews have concluded that cognitive function is essentially unaffected unless thermal stress is suf ﬁ cient to change T core away from homeostatic or steady state conditions (Hancock & Vasmatzidis, 2003).”
Temperature and Decisions: Evidence from 207,000 Court Cases (2019, background): “…with highest productivity being at 21.75 ◦C (71.5 ◦F) with a decrement of performance of around 9% when temperature is 30 ◦C (86.1 ◦F).5 In general heat stress has a much greater influence than does cold stress on the performance of cognitive tasks (see Hancock and Vasmatzidis (2003) for a review).”