What is Usability
1991
219 citations
The paper relates different approaches to usability based on the product, the user, ease-of-use, actual usage and the context of use; and proposes that usability should be defined as the ease of use and acceptability of a product for a particular class of users carrying out specific tasks in a specific environment. Criterion levels for measure- ments of attitude and user performance determine whether the design of the product is successful in achieving usability. Diagnostic evaluation of usability problems may be based on analysis of user interaction or comparison of product attributes with guidelines.
A walkthrough facility for testing the usability of a user interface design before the software is written or a prototype is built is described. The use of this method to evalua...
Web site usability is a critical metric for assessing the quality of a firm's Web presence. A measure of usability must not only provide a global rating for a specific Web site,...
The technology acceptance model (Davis 1989) is one of the most widely used models of IT adoption. According to TAM, IT adoption is influenced by two perceptions: usefulness and...
Previous research indicates that perceived usefulness is a major determinant and predictor of intentions to use computers in the workplace. In contrast, the impact of enjoyment ...
Valid measurement scales for predicting user acceptance of computers are in short supply. Most subjective measures used in practice are unvalidated, and their relationship to sy...