Wangenheim M, Borg G, Holzmann P
Ups J Med Sci. 1987;92(1):1-17. doi: 10.3109/03009738709178674.
In two experimental series a panel of observers rated the perceived exertion of a worker performing different tasks. The first experiment involved the lifting of boxes of different weights. The second experiment comprised combined static and dynamic work of the assembly-line type during a full working day. The results show that the observers were able to discriminate between the different loads in all stress situations. Since the loads ranged from low to maximal stress, all were able to make assessments over the full range. Furthermore, the relationship between observer ratings and self-ratings approximated a logarithmic function with the observers tending to overestimate the low stresses while there was closer agreement in the rating of high stresses.
在两个实验系列中，一组观察者对执行不同任务的工人的主观用力程度进行了评级。第一个实验涉及搬运不同重量的箱子。第二个实验包括在整个工作日进行的流水线式的静态和动态工作组合。结果表明，观察者能够在所有压力情况下区分不同的负荷。由于负荷范围从低到最大压力，所有人都能够在整个范围内进行评估。此外，观察者评级与自我评级之间的关系近似于对数函数，观察者倾向于高估低压力，而在高压力评级方面则有更密切的一致性。
