On the establishment of the user Experience assessment standard and the user index system

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As the name implies, the user experience is a purely subjective psychological sensation, with many uncertainties and individual differences, and it is not easy to assess the user experience accurately.

It is not easy because:

1. Lack of standards for user experience

1 The definition of user experience, is always floating in the theoretical level, lack of clear evaluation criteria.

2 different products have different emphases on the components of user experience.

2. Lack of effective assessment methodologies

1 The experiment has the uncertainty factor, the user exists individual difference.

2 large sample size evaluation and testing cost is high.

Therefore, in order to be able to accurately assess the user experience, the creation of the evaluation criteria should focus on practicality and operability, following several principles:

1 All evaluation criteria can be quantified to provide detailed assessment data.

2 The evaluation criteria can be measured and observed in real, and can be reproduced.

3 evaluation criteria can be reviewed in accordance with the cycle, to verify the specific period of improvement.

4 The evaluation criteria should have better structural validity.

At present, the study of evaluation criteria can be divided into two categories: the evaluation criteria of the content and the evaluation criteria of the users concerned.

The index system of attention content

Such as Nielsen's 4 new usability parameters, namely navigation, response time, credibility (credibility) and content. In addition, Agarwal and Venkatesh The Microsoft Usability Guidelines for usability evaluation of Web sites (Microsoft Usability Guidelines,mug), which includes 5 dimensions in its metric system: ease of use, for medium users (Made for the Medium), emotion, content and facilitation (promotion).

Influenced by this, many researchers have put forward a similar view, such as Turner, which divides usability into navigation, web design, content, accessibility, multimedia usage, interactivity and consistency. Some scholars have further analyzed the importance of usability index of each website through various empirical studies. such as Monideepa Tarafdar analysis of the existing Web site usability design indicators for the impact of the site, web site design factors, such as information content, navigation system ease of use, download speed, site accessibility and so on are positively related to usability, site security and customization level is not related to availability.

Focus on the user's index system

As far as the research thought is concerned, this part of the researcher investigates the construction of usability evaluation Index system from the angle of user behavior analysis, some scholars discuss this problem from the theoretical aspect. such as Venkatesh technology acceptance model (Marvell acceptance Model,tam) into the field of usability research, the importance of the task and the user friendliness of the system determine the degree of user acceptance of technology. In addition, metrics such as ease of use, user-friendliness, and customer satisfaction have also proven to be decisive for site availability.

What needs to be pointed out is that the study of usability metrics into the so-called focus on content and focus on the user's two orientations, does not mean that the former does not pay attention to the user, the latter is not concerned about the content, but the two types of research ideas in different ways. From the composition of the specific indicators, the difference between the two types of studies is actually not obvious. In practical work, it is necessary to generalize the index system of evaluation according to the characteristics of the specific products evaluated, and to evaluate the whole system by evaluating the specific indexes contained in the index system.

Original: http://mux.baidu.com/2011/05/1003/