心理负荷的测量方法（Measurement of psychological load）.docVIP

心理负荷的测量方法（Measurement of psychological load） 28. discuss the measurement method of psychological load. There are three main methods for measuring psychological load level: secondary task method, subjective assessment method and heart rate measurement method. (1) secondary task law In normal circumstances, the secondary task approach can be used to measure mental burden levels. A secondary task is an unrelated task inserted into the execution of an important task (the primary task). If the mental workload of the main task is very high, people will not be able to do minor tasks, if the main task is low mental load, the rest of the mind Resources can then be used to accomplish secondary tasks, so secondary task performance can serve as a primary task or an indicator of psychological load levels. The minor tasks commonly used in experiments are: (a) rhythmic percussion tasks: ask the subjects to strike with their hands or feet at the same time as possible while completing the main task. Before the experiment, the subjects must be trained to make the time rhythm accuracy of the single hit task reach a steady level. In the experiment, due to the addition of the primary task, the psychological burden of the subjects increased, the tempo of the percussion time decreased, and the heavier the workload of the main task, the more serious the decline in accuracy. (b) time interval judgment task: the subjects are required to judge the missing time interval while completing the main task. For example, call every 10 seconds to knock your fingers or send a signal. This task also needs to be pre trained before the experiment, so that the time interval of the subjects can be judged to a certain precision. When there is a major task, the stability of judgment will be disturbed, and the more difficult the main task is, the heavier the mental load is, and the lower the judgment ability will be. Because we can judge the mental burden level of the main task according to the judgment error