User experience is determined by many factors, but for different types of products (including different user groups, usage purposes, usage scenarios, etc.), the evaluation dimensions and the weights between dimensions are different. Taking the mobile phone whatsapp Database input method as an example, this is a typical tool product. The user's performance of text input (including speed and accuracy) is the most important factor in determining the overall user experience level, so it is also the most important focus in experience evaluation. But in practice, we often whatsapp Database find that programs with poor input performance usually have low subjective satisfaction of users - this is easy to understand and there is no problem, and some experimental programs with high input performance often fail to obtain the highest subjective satisfaction of users degree score.
For example, for a solution with a small key size, since the user needs to be very careful when inputting, the correct rate of input is higher, but they will feel psychologically nervous and uncomfortable, resulting in poor subjective satisfaction. Psychological load whatsapp Database and product subjective satisfaction In fact, the user's psychological load level when using the product also directly affects the user's subjective satisfaction. Mental Workload is defined in a variety of ways, and we do not intend to discuss its precise meaning here. In general, we can think whatsapp Database of mental load as a concept corresponding to physical load—the physical effort required to complete an operation—the mental effort and the mental effort required to perform an operation or complete a task.
In psychology, the Yerkes-Dodson law describes the inverted U-shaped relationship between the level of mental arousal (Arousal) and operational performance (Performance). Psychological load and arousal levels were positively correlated. That is, at both low whatsapp Database and high levels of mental load, the performance of the operation will be negatively affected. In sports, performance is adversely affected if the athlete is distracted, paralyzed (at a low mental load level) or, conversely, extremely nervous (at a high mental load level). measure of mental load whatsapp Database After understanding the influence of psychological load on subjective satisfaction and operational performance, how to measure psychological load is a problem that must be solved.