Feasibility study of predictive human performance modeling technique in field activities

This paper reports the results of usability evaluation based on the predictive human performance models applied to any products, and introduces application of a tool for predicting operational time to an IP phone and an electronic health record system UI consulting. We assessed effectiveness of this tool using efficiency estimation technique and extracted the practical the practical problems. In the human interface (HI) consultation process, as the tool predicts execution time of the current version and of the improved version, the improvement effect could be assessed. For an IP phone, we created the modified user interface designs from the point view of operational efficiency, so that we could indicate effectiveness of this tool by comparing task execution time. For an electronic health records, however, it is difficult to "directly" verify the effectiveness of the modified user interface designs from an efficiency standpoint. Through an evaluation scenario, the tool provided data that is necessary for assessment of improvement in this case.