@article{Liu2025, 
author = {Weiwei Liu and Yingying Zhao and Xinpeng Yang and Weibin Lin},
title = {Effects of high temperatures on the cognitive performance at a low-activity level: A quantitative model},
year = {2025},
journal = {Building Simulation},
volume = {18},
number = {7},
pages = {1819-1836},
keywords = {high temperature, cognitive performance, thermal comfort, low-activity},
url = {https://www.sciopen.com/article/10.1007/s12273-025-1286-y},
doi = {10.1007/s12273-025-1286-y},
abstract = {Experimental evidence suggests that high temperatures affect cognitive performance; however, there are limited quantitative models available to evaluate or predict this effect. In previous studies, the authors proposed a thermal stress comprehensive index (TSCI), which reflects the coupling of physiological and psychological parameters. Based on this, a comprehensive model of thermal stress and cognitive performance (TSCI-CP model) under high-temperature conditions was established, and its rationality for moderate activity intensity tasks was verified. The present study further investigated the applicability of the TSCI-CP model for low activity intensity tasks. By integrating experimental data from a series of climate chamber experiments conducted at five temperatures (26, 30, 33, 37, and 39 ℃) and two humidity levels (50% and 70%), the relationship between physiological and psychological parameters and the cognitive performance of 104 subjects at a low-activity level (sitting) was analyzed. Subsequently, the TSCI-CP model for low activity intensity tasks was established. The results of the goodness of fit and deviation analysis confirmed the validity of the model. Based on the TSCI-CP model, a new perspective on the relationship between thermal stress and cognitive performance under high-temperature conditions was proposed: the speed of cognitive tests exhibited a U-shaped trend, while the accuracy followed an inverted U-shaped trend. This study offers a theoretical foundation for ensuring the safety and security of low activity workers in high-temperature environments.}
}