Evaluating user interface design with belief constructs

The perceived usefulness and perceived ease of use constructs have received widespread recent attention as predictors of the user acceptance of information technologies. In this study, the perceived usefulness and perceived ease of use of user interfaces are modeled as predictors of task accuracy, task latency and user confidence in decision quality. Results indicate that interfaces received as easy to use enhance user productivity, in terms of more accurate decisions and reduced decision times. Interfaces perceived as easy to use also contribute significantly to user confidence in decision quality. However, interfaces that are perceived as more useful result in users taking longer to make decisions that are no more accurate. Furthermore, user confidence in decision quality is not promoted by interfaces that are perceived as useful.<<ETX>>

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