定义:
In About Face 2.0, Alan Cooper describes the elastic user as an ill-defined user who’s characteristics change to suit the needs of the developer — sometimes as an expert and sometimes a novice.
避免design for the elastic user的有效方法:
1)创建用户画像(personas);
2)遵循用户心理模型(mental model of user),也叫做用户概念模型(conceptual model of user),而不是软件运行机制的实现模型(represented model of software)。
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